Sleep 5 hours per night and still workout? Science-backed Considerations of Slight Sleep Deprivation
The short answer
You can train on five hours of sleep, but the research says you will do less work and do it worse, so adjust the session instead of pretending nothing changed. The study Jerred and Joe break down put resistance-trained women through nine nights of moderate sleep restriction and tracked performance, hormonal response, and perceived fatigue. Both the quality and the quantity of their lifting dropped.
Episode 175 of The Garage Gym Athlete Podcast is up!
Sleep 5 hours per night and still workout? Science-backed Considerations of Slight Sleep Deprivation
This week Jerred and Joe are back it and tackling a study on sleep. It investigated the effect of nine nights of moderate sleep restriction on performance, hormonal responses, and perceived fatigue in resistance-trained females. The guys give their takeaways and their thoughts on the study overall! Next the guys talk about their own experience with sleep and how they adjust their training according to how their body feels on less sleep. Lastly, the guys talk about this week's Meet Yourself Saturday. It's called the Confused 2K so make sure to pick up some good tips before tackling this one!
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IN THIS 38-MINUTE EPISODE WE DISCUSS:
- Confused 2K
- Sleep Deprivation
- Resistance Trained Females
- How Much Sleep Affects Training
- Front Rack Holds and Rowing
- Tips For MYS
- Updates and Announcements
- And A LOT MORE!!
Diving Deeper…
If you want to go a little bit deeper on this episode, here are some links for you:
Study of the Week
Garage Gym Athlete Workout of the Week
Be sure to listen to this week’s episode:
- Sleep 5 hours per night and still workout? Science-backed Considerations of Slight Sleep Deprivation
What the research says
The featured study is Sustained Sleep Restriction Reduces Resistance Exercise Quality and Quantity in Females. The design is what makes it worth your attention: nine consecutive nights of moderate restriction, not a single all-nighter. That is much closer to how sleep debt actually shows up in real life, where a busy stretch quietly eats an hour or two a night for a week and a half.
Two words in the title carry the finding. Quantity means the total work went down, fewer reps completed at a given load. Quality means the work that did happen was worse. Together they describe the experience most people recognize: the session technically got done, but the bar moved slower and the last sets fell apart earlier than usual.
The useful response is not to skip training. It is to change what you are asking of the session. Short sleep is a bad week to chase a heavy single or a personal record, and a fine week to hold position with moderate loads and clean technique. Note also that this study was conducted in females, which is worth flagging because the literature on trained women is thinner than it should be.
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Thanks for listening to the podcast, and if you have any questions be sure to add it to the comments below!
To becoming better!
Jerred
Frequently asked questions
Should you work out on five hours of sleep?
You can, but expect less. Sustained sleep restriction reduced both the quality and the quantity of resistance exercise in this study, so the sensible move is to lower the demand of the session rather than skip it or push through the same plan.
How much does sleep loss affect strength training?
Enough to show up in the numbers. Across nine nights of moderate restriction, trained women completed less work and completed it less well, with hormonal responses and perceived fatigue tracking alongside.
Is one bad night of sleep a problem?
This study was about sustained restriction rather than one night, which is the more common real-world pattern. The concern is the accumulated debt from a long stretch of short nights, not a single rough one.
What should I change in my training when sleep is short?
Back off intensity before you back off consistency. Keep the session, drop the max-effort work, hold the loads moderate, and protect technique. Chasing a personal record on a sleep deficit is how good weeks turn into injuries.
Train like an athlete. For life.
Programming built this way: hard when it counts, sustainable the rest of the time.
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