Better Sleep, Better Performance

Better Sleep, Better Performance
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Sleep is not just downtime—it’s essential for recovery, mental sharpness, and physical readiness. One of the most critical stages of sleep is rapid eye movement (REM) sleep, a period that helps the brain recharge and reinforces skills learned during training. 

What Happens During REM Sleep 

REM sleep typically begins about 90 minutes after falling asleep and repeats several times throughout the night. During this stage: 

  • The brain is highly active while the body remains mostly still.
  • Most dreaming occurs.
  • Daily information is sorted and stored, boosting memory and learning.
  • Stress and emotions are processed, supporting clear thinking and steady decision-making.   

Why REM Sleep Matters for Marines 

For Marines, mental performance is as critical as physical strength. REM sleep supports: 

  • Faster reaction time.  
  • Improved focus and concentration.  
  • Enhanced problem-solving and decision-making.

These benefits are essential both in training and during operations. Missing REM sleep can lead to slower thinking, poor concentration, irritability, and difficulty managing stress—ultimately affecting performance and recovery.

Tips to Protect and Improve REM Sleep 

Strong sleep habits help ensure sufficient REM sleep: 

  • Maintain a consistent sleep schedule (go to bed and wake up at the same time daily).  
  • Limit caffeine late in the day.  
  • Reduce screen use before bedtime.  
  • Sleep in a dark, cool, and quiet environment to allow uninterrupted cycles.

Support Your Sleep and Readiness 

REM sleep is a key component of staying mentally sharp and mission ready. To learn more about improving REM sleep, contact your local WARR-Semper Fit team to speak with a certified sleep coach. 

Published: 14 Aug 2026
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