Why does my stamina feel low?

Published: October 23, 2025
Updated: October 23, 2025

Low endurance may be the result of poor recovery between workouts, poor nutrition timing, or problems with hydration levels. The body needs proper rest to restore energy stores for the next effort. Failure to eat post-exercise meals or sleep less than 7 hours will deplete energy reserves. It is often a good idea to monitor resting heart rates to get to the source of the problems.

Recovery Deficits

  • Warning sign: Resting heart rate increase >10%
  • Solution: Add 1-2 rest days weekly
  • Action: Reduce training volume 20%
  • Prevention: Schedule deload weeks every 8 weeks

Nutrition Gaps

  • Warning sign: Mid-workout energy crashes
  • Solution: Eat carbs 2hrs pre-workout
  • Action: Consume protein within 60min post-session
  • Prevention: Prepare portable snacks like bananas

Hydration Issues

  • Warning sign: Dark yellow urine
  • Solution: Drink 35ml water per kg daily
  • Action: Add 500ml per activity hour
  • Prevention: Sip electrolyte drinks during long sessions
Stamina Recovery Plan
TimingMorningActionMeasure resting HRTarget
<60 bpm
CheckpointDaily
TimingPre-workoutActionHydrate + carb snackTarget
500ml water
Checkpoint2hrs before
TimingPost-workoutActionProtein intakeTarget
20g protein
CheckpointWithin 60min
TimingEveningActionSleep preparationTarget
7-9 hours
CheckpointWind-down routine
TimingWeeklyActionActive recoveryTarget
Light activity
Checkpoint1-2 sessions
Reassess after 4 weeks if stamina doesn't improve

Overtraining without adequate recovery leads to depletion of glycogen stores and irreversible fatigue. High-intensity training is limited to two training days a week with 48 hours of rest taken between sessions. If feeling irritability or insomnia, flag this session as dangerous. To correct, lower one's training volume by 20 percent and introduce yoga as a form of active recovery.

*Sleep quality* directly affects energy restoration. Try to get 7-9 hours of unbroken sleep in a dark, cool room. Poor sleep decreases growth hormone production by 30%. At the same time of night, begin going to bed consistently, and limit screen time in the hour(s) before bed.

Skipping warm-ups means that less blood flows to the muscles, which means less oxygen to the muscles. Always spend 5 minutes completing dynamic warm-up drills like leg swings. (See even more leg swings pictured below.) This helps reduce early fatigue so you can be a little more able to maintain intensity throughout your workouts.

Read the full article: How to Increase Stamina Effectively

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