Low Reps Aren’t Worth It (for Muscle Growth)

Name: Low Reps Aren’t Worth It (for Muscle Growth)
Uploaded: 2026-04-08T16:01:31.000Z
Duration: 28 min 28 s
Channel: Renaissance Periodization

Renaissance PeriodizationApril 8, 202628m

Topics17

Why People Choose Low Reps0:00 Dr. Mike's Personal Approach0:31 Research on Rep Ranges and Growth1:30 Injury Risk Factors4:01 Additional Injury Risk Variables8:01 Why Dr. Mike Stopped Low Rep Training9:31 Dr. Mike's Current Training Approach11:31 Downsides of Lower Reps13:01 Upsides of Lower Reps17:31 Individual Differences and Variation19:31 Goals and Recommendations22:01 Matching Rep Ranges to Muscles and Exercises25:41 Training Progression Across Experience Levels26:01 Advanced Rep Range Selection26:31 Special Considerations for Rep Range Selection27:01 RP Hypertrophy App Rep Range Guidelines27:30 Final Guidance28:00

In a Nutshell

Low reps (under 5-10) are not required for muscle growth and carry higher injury risk, especially for older lifters or those with prior injuries. Research shows sets of 5-30 reps taken close to failure produce equivalent hypertrophy over 4-16 week training blocks. Dr. Mike trains primarily in the 10-20 rep range for safety and recommends beginners start with 5-10 reps for foundational strength before experimenting with all rep ranges as an intermediate.

AI-Generated Notes

These notes were generated by AI and may contain inaccuracies.

The number one reason people lift heavy and for lower reps is because it's fun as hell and it strokes your ego. That's a real thing. People who train heavy have a higher chronic injury risk. If you go heavy all the time, your probability of getting injured is much higher than if you go light all the time. If you're bigger and stronger, you can exert more force and more force is what causes injuries. If you just want to be jacked, then you have to be open to all rep ranges as potential tools in the toolbox. Be careful looking for that one correct rep range for yourself because it literally might not exist.

Dr. Mike from RP Strength no longer trains with sets of under five reps and often trains with sets of more than his 10 rep max for muscle growth. He stopped doing anything less than really 10 reps or his 10 RM based on research insights and safety insights.

There are 20 years of research on rep ranges and growth with multiple reviews of literature saying the exact same thing. Between sets roughly between your five rep max (though a little lower is fine) and roughly your 30 rep max (though a little higher is fine), as long as those sets are taken close to failure (three reps in reserve or closer), those sets are roughly equivalent over months of training time for muscle growth. Study after study shows that set for set, hard set for hard set, close to failure set for close to failure set, within the context of 8, 12, 16 weeks of training, high rep sets and low rep sets cause undifferentiable growth on average.

This does not mean that rep ranges and growth is identical for everyone. This also doesn't mean that if you train for a long time, maybe going a bit heavier or going a bit lighter is a long-term, years, better strategy. But it does mean that in any given program that lasts 4 to 16 weeks, you grow about as much muscle with sets of six reps on average as you do with sets of 18 reps on average, set for set.

The number one factor in injury risk in lifting is the amount of load on the bar. Your two repetition max is categorically heavier than your five rep max, than your 10 rep max, than your 30 rep max. Training in the five to 10 rep range is categorically more risky than the 15 to 20 rep range. If you have a history of prior injuries to an area, the probability that lifting heavy will make you hurt again is much higher. Your probability of getting hurt from heavy weights is much higher if you're bigger and stronger. Major muscle tears are way more common in male super heavyweights than they are in female lightweights by orders of magnitude, factors of 10.

Your chance of injury goes up if you're in a high fatigue state. If you're benching 190-200 for sets of five and you're really fatigued but still grind through the set, that set is very high risk compared to if you weren't fatigued. Fatigue doesn't itself mean that you're going to get hurt. If you combine high fatigue with a load of willpower and a lot of caffeine, your probability of injury is just straight up higher. Getting older increases your probability of injury past your 20s and definitely into your 40s and older.

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Low Reps Aren’t Worth It (for Muscle Growth)

Why People Choose Low Reps00:00

Dr. Mike's Personal Approach00:31

Research on Rep Ranges and Growth01:30

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