There is a familiar moment at the end of a productive firearms training day. We’ve all seen it. The shooter who struggled that morning is moving more efficiently. Groups have tightened. Equipment manipulations that required deliberate thought several hours earlier look smoother. The instructor gives a command, and the student responds almost immediately. Targets look better, times improve, and everyone walks away with the reassuring sense that something important has been accomplished. I have become increasingly skeptical about the reality of that moment. 

What we are observing at the end of a training day is performance, and performance is not necessarily the same thing as learning. That distinction sounds academic until we apply it to a police officer who may need to retrieve a skill months later, under conditions bearing almost no resemblance to the range where it was acquired. Suddenly, the distinction becomes extraordinarily consequential. The problem is that we tend to evaluate training while training is still happening. We look at the last few repetitions, the final drill, or the qualification score and decide whether the student has learned the skill. Yet the nervous system does not operate according to the instructor's schedule. Some of the biological processes determining whether a newly practiced skill survives are still occurring long after the targets come down and the range goes cold. 

In Unlocking the Brain Code, I described one of the fundamental limitations of traditional training architecture this way: “What it does not typically interrogate is how the brain encodes, stabilizes, consolidates, and retrieves complex motor skills over time” (Hanson, 2026, p. 15). That phrase, “over time,” deserves more attention than we usually give it because motor learning does not conclude with the final repetition. Practice begins a process that continues after physical practice has stopped. Training does not necessarily end when the ammunition is packed away. 

When someone learns a new motor skill, whether drawing and presenting a handgun, manipulating a TASER, accessing a baton, or performing another complex piece of defensive equipment handling, the nervous system is not simply recording a sequence of movements for later playback. Learning involves changes across interacting neural systems responsible for movement planning, sensory processing, prediction, error correction, and memory. Motor learning progresses through processes that include acquisition, consolidation, automatization and retention, with changes occurring within cortical and subcortical networks as experience accumulates (Doyon & Benali, 2005). Di Nota and Huhta make this particularly relevant to policing. They argue that police motor skills cannot be separated neatly from cognition because an officer's actions emerge from the integration of perception, memory, situational awareness, decision-making, and physical execution. A handgun presentation is not merely an arm movement. A TASER deployment is not simply an equipment manipulation. What ultimately appears as physical behavior is the output of a much larger perceptual-cognitive-motor system (Di Nota & Huhta, 2019). That system continues changing after practice. 

What Happens After Practice Ends?

This is where consolidation enters the conversation. A newly acquired motor memory does not instantly become a stable, permanent representation. It remains susceptible to modification and disruption while the nervous system continues reorganizing what was practiced. Consolidation broadly describes the processes through which that initially fragile memory becomes more stable over time. Sleep appears to participate in that process. 

Some of the most influential evidence came from Matthew Walker and colleagues, who trained participants on a sequential finger-tapping task and compared performance after periods of wakefulness and sleep. Following a night of sleep, participants demonstrated approximately a 20% increase in motor speed without sacrificing accuracy. The improvement was also associated with the amount of stage 2 non-rapid eye movement sleep obtained late in the night (Walker et al., 2002). Stefan Fischer and colleagues reported similar findings that year using a finger-to-thumb sequence task, concluding that practicing a motor skill initiates a consolidation process that continues for hours after practice ends (Fischer et al., 2002). 

Subsequent neuroimaging research added another dimension. Walker and colleagues found that sleep following motor practice was associated with changes in the brain systems supporting the learned sequence, suggesting that the nervous system was not merely storing the motor memory in the condition in which it left practice. The representation itself appeared to be reorganizing (Walker et al., 2005). This aligns with the broader neuroscience of memory, which increasingly views sleep as an active biological state rather than simply a period during which learning temporarily stops (Diekelmann & Born, 2010). This is why I wrote later in Unlocking the Brain Code that “the neural mechanisms responsible for long-term retention involve processes that unfold over time, including sleep-dependent consolidation and synaptic reinforcement” (Hanson, 2026, p. 107). That does not mean sleep magically creates skill.

What Sleep Research Really Says

It is important that instructors resist turning legitimate neuroscience into another range myth. We should not tell officers that eight hours of sleep will make them 20% better shooters the following morning. A finger-tapping experiment is not a gunfight, and the motor-memory literature is considerably more complicated than some popular summaries imply. In fact, later researchers challenged some of the strongest claims surrounding sleep-dependent motor improvement. Pan and Rickard questioned whether apparent overnight gains in some studies could be explained partly by methodological issues, fatigue occurring during initial testing, and the way performance improvements were calculated (Pan & Rickard, 2015). Rickard, Pan, and Gupta later reported evidence of substantial publication bias within portions of the motor-sequence literature and cautioned against strong claims that sleep reliably produces absolute performance improvements (Rickard et al., 2022). That scientific disagreement matters, and I think firearms instructors should know about it. 

At the same time, the evidence does not support simply dismissing sleep. A 2020 meta-analysis examining 48 studies involving more than 1,600 participants found a small overall advantage for sleep compared with an equivalent period of wakefulness in motor-memory consolidation (Schmid et al., 2020). More recent experimental research has continued to identify circumstances in which sleep after motor practice appears to benefit subsequent consolidation, although those effects vary according to the skill, training schedule and experimental conditions (Truong et al., 2023). The responsible conclusion is therefore more interesting than the popular one. Sleep does not install skill. Sleep cannot rescue bad repetitions. It cannot transform poor instruction into good instruction or compensate for a motor pattern that was never adequately encoded. What the literature does support is the broader principle that learning continues after practice and that sleep is one of the biological conditions influencing what happens to recently acquired motor memories during that offline period.

The Illusion of Mastery

That should change how we think about a training day. Consider a recruit spending eight hours on a firearms range. A new skill is introduced in the morning. The recruit practices it repeatedly. Another skill is added. Then another. The repetitions continue through the afternoon. Performance improves. Movements become smoother. The recruit requires less conscious attention to produce the desired response. By 4 p.m., the recruit may perform substantially better than at 9 a.m. The danger is assuming that the 4 p.m. performance represents possession of the skill. It may, however, represent only temporary accessibility of the skill. In other words, some of the increased efficiency may reflect a short-term neurophysiological adaptation to repeated task performance rather than a durable change in capability. Genuine learning may be occurring, but immediate performance alone cannot tell us how much of that improvement will survive consolidation, delay, and changing conditions. This is the illusory trap many instructors fall into: mistaking what a student can do at the end of practice for what the student has actually learned. 

Soderstrom and Bjork described this problem extensively in their review of learning versus performance. What instructors can observe during practice is performance, but that performance can be a remarkably unreliable indicator of the relatively durable changes that constitute actual learning. Conditions that make performance look good during acquisition do not always produce the strongest retention or transfer, while some conditions that temporarily make practice more difficult can produce superior learning later (Soderstrom & Bjork, 2015). This is the illusion of learning in one of its purest forms. 

Blocked repetition can make a shooter look progressively better because the shooter keeps solving essentially the same problem. The target remains familiar. The distance remains known. The sequence remains predictable. The previous repetition is still highly accessible. The instructor interprets increasing smoothness as stabilization, while the student experiences that same smoothness as growing mastery. But fluency is not permanence. 

As I put it elsewhere in Unlocking the Brain Code, “Memory consolidation requires time. Transfer requires variability. Adaptability requires exposure to uncertainty” (Hanson, 2026, p. 20). Those three sentences have direct implications for how we schedule training. The following morning may tell us more about yesterday's learning than yesterday's final drill. 

Retrieval Reveals Retention

Imagine bringing the recruit back to the range and, before running several familiar warmup strings, asking for retrieval of the skill learned the previous day. No extensive review. No instructor demonstration immediately beforehand. No five repetitions to get comfortable again. What remains? Can the shooter reconstruct the task? Does the movement return quickly? Which portions survived? Which require prompting? Does performance remain reasonably intact when one environmental variable changes? That is not merely warming up. It is assessing retention. 

The same principle applies to defensive equipment other than the handgun. Imagine an officer learning to access and deploy a TASER from a new equipment configuration. During blocked practice, the officer performs the same access sequence repeatedly from an upright position. After enough repetitions, the movement becomes smooth. The instructor sees consistency and checks the skill off as trained. Now end the session. Bring the officer back the next day and evaluate the task before rebuilding yesterday's fluency. Then change a constraint. Have the officer perform the relevant training task from another safe, approved posture or while managing a competing cognitive demand. The instructional question changes from “Can you repeat what we have been repeating?” to “Did the nervous system retain a usable solution?” 

A baton presents the same issue. Repeated access and deployment during one uninterrupted block can produce impressive end-of-session performance. Yet separating practice across sessions forces retrieval. The officer must reconstruct the motor solution rather than simply continuing a movement sequence that remains cognitively warm from the previous 30 repetitions. This is where spacing and sleep intersect. 

Spacing is not simply giving students a break. When practice is separated across time, the learner loses some of the temporary accessibility created by continuous repetition. Returning to the task requires reconstruction. That retrieval demand can strengthen learning precisely because it makes performance somewhat more difficult. Within NeuralTac, I view this as part of a larger instructional architecture. Spacing, retrieval practice, variability, contextual interference, calibrated stress, and consolidation are not independent tricks. They interact. The purpose is not to make training difficult for the sake of difficulty. The purpose is to create conditions under which the nervous system must repeatedly retrieve, recalibrate, and adapt the skill rather than simply repeat it. 

Sleep fits into that architecture because time between training sessions is not cognitively empty. The nervous system is still processing what occurred. That creates an uncomfortable question about how some academies and training programs are scheduled. We may put recruits through a long day of cognitively and physically demanding instruction, finish late in the afternoon, require additional academic work into the evening, and bring them back early the following morning. Administratively, the schedule may be efficient. Biologically, it may be something else entirely. 

When Fatigue Becomes a Training Issue

Police already operate in a profession where sleep is frequently compromised by shift work, overtime, court appearances, call-backs and rotating schedules. Rajaratnam and colleagues studied 4,957 North American police officers and found that 40.4% screened positive for at least one sleep disorder. Positive screening was associated with adverse health, safety, and performance outcomes, including greater risk of administrative errors and safety violations (Rajaratnam et al., 2011). This makes sleep relevant to training in two different ways. 

The first involves consolidation after learning. The second involves the condition of the learner who returns for the next training block. A recruit who slept poorly is not simply missing a possible consolidation opportunity. That recruit may also begin the next day with degraded vigilance, attentional control and cognitive efficiency. If the next lesson requires perception, inhibition, decision-making and motor execution, the instructor is now stacking additional cognitive demand onto a nervous system already operating under reduced resources. Then add stress. 

Police performance research has repeatedly demonstrated that elevated physiological arousal can interfere with the cognitive and motor systems officers depend upon during critical incidents. Arble, Daugherty and Arnetz found differential effects of physiological arousal across police communication and tactical performance during a simulated critical incident (Arble et al., 2019). Anderson and colleagues reviewed evidence showing that acute stress physiology can degrade skilled motor performance and emphasized that evidence-informed training can mitigate, although never completely eliminate, that degradation (Anderson et al., 2019). Fatigue, sleep restriction, cognitive load, and acute stress therefore do not exist in separate worlds. They converge on the human being we expect to perform. 

This is why I believe instructors need to become more willing to stop training. That sounds almost heretical in a profession that frequently measures productivity in repetitions and rounds fired. If ammunition remains and another hour of range time is available, the instinct is to use it. More repetitions feel like more learning. But more is not automatically better. 

At some point, attentional quality deteriorates. Physical fatigue accumulates. Errors begin creeping into movement. The learner may continue producing acceptable performance because familiarity carries the task, but the instructional return on each additional repetition may be declining. Sometimes the best thing an instructor can do for tomorrow's learning is end today's training. 

That does not mean shortening every range day or restructuring every academy around sleep research. It means recognizing that training volume and learning are not synonymous. It means understanding that recovery is not wasted instructional time. It means designing multi-day courses as connected learning events rather than as independent eight-hour containers that must be filled from beginning to end. A thoughtfully designed second day should retrieve elements of the first. The third day should require access to material from both. Skills should reappear after meaningful delay and, eventually, under changed constraints. Prompting should decrease. Predictability should decrease. Perceptual and decision demands can increase appropriately. The instructor is no longer merely asking whether students can perform something they have just practiced. The instructor is testing whether yesterday's experience became today's capability. 

What Survives After the Range Goes Cold?

This also changes the meaning of the cold start. Firearms instructors often use the term casually, but from a learning perspective, truly cold performance can be incredibly informative. The first presentation, the first manipulation, or the first decision of the training period offers a glimpse of what remained accessible without immediately rebuilding the skill through repetition. We should pay attention to it. 

If an officer performed beautifully yesterday but requires 15 repetitions this morning to regain the same capability, that tells us something. It does not necessarily mean the previous training failed, but it does tell us that yesterday's final performance overstated what was actually available after delay. That is valuable information, particularly in high-liability training. 

Consolidation also does not care what the instructor intended to teach. The nervous system adapts to what was actually practiced. If every handgun drill begins from the same position, every TASER exercise occurs under the same predictable conditions, and every baton access follows the same cue, we should not be surprised when the resulting behavior becomes closely coupled to those conditions. Sleep cannot correct poor representativeness. A narrow motor memory can become a well-consolidated narrow motor memory. 

That is why NeuralTac does not treat sleep as an isolated principle. Consolidation must be considered alongside variability, retrieval, contextual interference, and representative task design. We are not trying merely to preserve a movement. We are trying to build a capability capable of being retrieved and adapted when circumstances change. The larger lesson is that instructors need to expand the boundary of what they consider training. 

The visible training session is only part of the learning process. Some of what determines the durability of the skill occurs after the firing line is empty. Recently acquired motor memories remain dynamic. Some stabilize. Some reorganize. Some weaken. The next encounter with the task reveals what survived. That should change the question we ask when a shooter finishes the day with a clean target. 

Instead of asking only, “How well can this student perform the skill right now?” we should also ask, “What will still be available tomorrow?” Then we need to find out. A successful qualification matters. Improved accuracy matters. Smooth equipment manipulation matters. Those measures should not be discarded. But they are snapshots taken while the learner remains immersed in the training environment. They tell us what the officer can do now, under these conditions, after these repetitions. 

Learning reveals itself later. It reveals itself when the shooter returns after the range has gone cold. It reveals itself when the officer retrieves the skill without the instructor rebuilding it first. It reveals itself when a familiar piece of equipment must be used amid competing information. It reveals itself when the context changes and the nervous system must reconstruct rather than simply repeat. And eventually, it reveals itself when the stakes are real. 

Perhaps the conceptual shift is remarkably simple. Sleep should not be viewed merely as something that happens after training. It is part of the biological interval in which the consequences of training continue unfolding. The instructor may have gone home, but the student’s nervous system has not finished the lesson. 

References 

Anderson, G. S., Di Nota, P. M., Metz, G. A. S., & Andersen, J. P. (2019). The impact of acute stress physiology on skilled motor performance: Implications for policing. Frontiers in Psychology, 10, 2501. https://doi.org/10.3389/fpsyg.2019.02501 

Arble, E., Daugherty, A. M., & Arnetz, B. (2019). Differential effects of physiological arousal following acute stress on police officer performance in a simulated critical incident. Frontiers in Psychology, 10, 759. https://doi.org/10.3389/fpsyg.2019.00759 

Di Nota, P. M., & Huhta, J. M. (2019). Complex motor learning and police training: Applied, cognitive, and clinical perspectives. Frontiers in Psychology, 10, 1797. https://doi.org/10.3389/fpsyg.2019.01797 

Diekelmann, S., & Born, J. (2010). The memory function of sleep. Nature Reviews Neuroscience, 11(2), 114-126. https://doi.org/10.1038/nrn2762 

Doyon, J., & Benali, H. (2005). Reorganization and plasticity in the adult brain during learning of motor skills. Current Opinion in Neurobiology, 15(2), 161-167. https://doi.org/10.1016/j.conb.2005.03.004 

Fischer, S., Hallschmid, M., Elsner, A. L., & Born, J. (2002). Sleep forms memory for finger skills. Proceedings of the National Academy of Sciences of the United States of America, 99(18), 11987-11991. https://doi.org/10.1073/pnas.182178199 

Hanson, K. A. (2026). Unlocking the brain code: Exposing the limits of traditional firearms instruction and high-liability training through neuroscience, psychology, and human performance research. Applied Threat Science Publications. 

King, B. R., Hoedlmoser, K., Hirschauer, F., Dolfen, N., & Albouy, G. (2017). Sleeping on the motor engram: The multifaceted nature of sleep-related motor memory consolidation. Neuroscience & Biobehavioral Reviews, 80, 1-22. https://doi.org/10.1016/j.neubiorev.2017.04.026 

Pan, S. C., & Rickard, T. C. (2015). Sleep and motor learning: Is there room for consolidation? Psychological Bulletin, 141(4), 812-834. https://doi.org/10.1037/bul0000009 

Rajaratnam, S. M. W., Barger, L. K., Lockley, S. W., Shea, S. A., Wang, W., Landrigan, C. P., O'Brien, C. S., Qadri, S., Sullivan, J. P., Cade, B. E., Epstein, L. J., White, D. P., & Czeisler, C. A. (2011). Sleep disorders, health, and safety in police officers. JAMA, 306(23), 2567-2578. https://doi.org/10.1001/jama.2011.1851 

Rickard, T. C., Pan, S. C., & Gupta, M. W. (2022). Severe publication bias contributes to illusory sleep consolidation in the motor sequence learning literature. Journal of Experimental Psychology: Learning, Memory, and Cognition, 48(12), 1787-1796. https://doi.org/10.1037/xlm0001090 

Schmid, D., Erlacher, D., Klostermann, A., Kredel, R., & Hossner, E. J. (2020). Sleep-dependent motor memory consolidation in healthy adults: A meta-analysis. Neuroscience & Biobehavioral Reviews, 118, 270-281. https://doi.org/10.1016/j.neubiorev.2020.07.028 

Soderstrom, N. C., & Bjork, R. A. (2015). Learning versus performance: An integrative review. Perspectives on Psychological Science, 10(2), 176-199. https://doi.org/10.1177/1745691615569000 

Truong, C., Ruffino, C., Gaveau, J., White, O., Hilt, P. M., & Papaxanthis, C. (2023). Time of day and sleep effects on motor acquisition and consolidation. npj Science of Learning, 8, 30. https://doi.org/10.1038/s41539-023-00176-9 

Walker, M. P., Brakefield, T., Morgan, A., Hobson, J. A., & Stickgold, R. (2002). Practice with sleep makes perfect: Sleep-dependent motor skill learning. Neuron, 35(1), 205-211. https://doi.org/10.1016/S0896-6273(02)00746-8 

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