March 17, 2026, 7:50 am | Read time: 4 minutes
Do you pay attention to the (length of) breaks during your strength training? This doesn’t refer to the breaks between individual training sessions, but between each set. If you haven’t been doing this, even though you’re aiming for muscle growth, you should definitely keep reading.
What Matters?
The athletes at the fitness club engage in intense strength training with various goals. They want to do something for their health or improve their muscle endurance and use a method called endurance training (about 15 to 25 repetitions per set with light weight). Others want to build muscle, for example, and therefore focus more on what’s called hypertrophy training (8 to 15 repetitions per set with appropriately heavy weight). A few aim to maximize their maximum strength (for competitive sports, for example) and use the so-called maximum strength method (three to eight repetitions per set with very heavy weight). What many don’t know is that it’s not only important how many sets per muscle and how many repetitions are done (stimulus volume)—or how often per week training occurs (stimulus frequency)—but also what the breaks between sets (stimulus density) look like.
The Topic of “Breaks Between Sets” Was Long Overlooked
The topic of “breaks between sets” was also long overlooked in German-language literature. In older textbooks, you find recommendations for break times between one and ten minutes. Unfortunately, that’s not very helpful. And if you look around in reality, you’ll notice that there are trainees who take very short breaks and others who take extremely long ones.
50 Seconds vs. 5 Minutes–How Short and Long Breaks Differ in Muscle Building
During the break in training, the muscle recovers and regains energy. One could say: The longer the break, the greater the strength that can be put into the next set. Ergo, a longer break of three to five minutes (or more) would be appropriate for maximum strength training.
On the other hand, in endurance training, as the name suggests, you also want to improve local muscle endurance. Therefore, a very short break of about ten to 50 seconds would be advisable.
Utilizing the Hormonal Peak After the Set for Breaks in Hypertrophy Training
Between these two training goals is hypertrophy training—for big muscles. When you expose yourself to a strength training stimulus, a lot happens in the body. Among other things, there is a so-called hormonal response.
If you look at this more closely in the blood profile, you’ll notice that some so-called anabolic hormones, like testosterone and the growth hormone GH (Growth Hormone), initially rise and then flatten out. If you assume that these hormones are somehow related to muscle growth, it might make sense to time this peak in secretion precisely.
Hypertrophy Training: The Ideal Rest Time Between Sets
How to Get Stronger Without Building (Visible) Muscles
Studies on the Effects of Different Break Lengths on Muscle Hypertrophy
Most studies have found such a peak after about 60 to 120 seconds. Recent review articles on this topic are not entirely in agreement. Researchers around Belmiro Freitas de Salles, a strength training specialist at the Universidade Federal do Rio de Janeiro, found an optimal break time of 30 to 60 seconds for hypertrophy.1 These shorter break times could be more effective because they lead to higher acute concentrations of growth hormones, which can promote muscle growth, according to the researchers.
Other researchers, like sports scientist Jozo Grgic, concluded in their studies that break lengths of two to three minutes might be necessary to achieve maximum strength gains.2
Individual Differences: Women Are Superior to Men
In fact, it seems that women are superior to men regarding set breaks and need less time to recover. Studies on strength training have observed that women can restore their strength values faster after a set than men.3 Their short-term recovery and fatigue resistance are due to three aspects: Women tend to have a higher proportion of type I fibers, which fatigue less quickly and regenerate faster.4 Additionally, women experience less metabolic stress during the set, as they produce less lactate and have more efficient fat oxidation at the same intensity as men.5 Lastly, better capillarization of muscle tissue helps transport metabolic waste products faster and improves oxygen supply during breaks.6
Breaks Between Sets in Hypertrophy Training–My Tip
If you ask me, the truth probably lies right in the middle. Therefore, I would recommend a break of one to two minutes for hypertrophy training. Just give it a try!