Will Short Breaks Between Weight Training Sets Promote Greater Muscle Gain?

One of the numerous bodybuilding concepts that weight lifters must contemplate when compiling an effective workout system is rest between sets, with some believing that short rest periods provide a greater amount of muscular overload, leading to larger muscle growth. This idea is based on the overall body fatigue felt when engaging in a weight training workout with brief rest between workout sets, as the assumption is, if such a workout is more challenging physically, the muscle growth must therefore be superior compared with longer rest between sets.

The flaw in this theory is that the fatigue felt when rest periods between weight training sets are reduced does not stem from superior overload to muscles, but rather occurs due to increased involvement of the cardiovascular system, where the heart is pumping significantly faster to support the continuous workload, somewhat like a heavy jogging session. As a result, the amount of weight used during workout sets declines sharply during short rest periods, and this actually reduces total overload, harming muscle growth. The weight training workout session with short rest between sets may feel substantially more intense due to significant cardiovascular fatigue, but this should not be confused with a potent muscle building workout plan.

The error made by many bodybuilders is to create a hybrid between their aerobic and weight training workouts, believing that this approach is sufficient in maximally stimulating both fat burning and muscle building. Yet, two variables are forgotten when constructing this hypothesis, as weight used during each set is an important concept in encouraging the largest level of muscle gain, and complete mental focus during each set is also critical in promoting the greatest amount of intensity. When rest periods between workout sets are reduced to very low levels, the mind often becomes fatigued due to the lack of a recovery period between each set, and develops a nagging tendency to put forth less effort during the weight training set itself. This, in combination with the considerable physical fatigue that is a consequence of moving quickly between weight training sets, causes the body to lift less overall weight than would be possible if rest periods were extended to a more suitable level, as the mind and body do not have sufficient opportunity to recover sufficiently for the highest level of output during each set.

Extended rest periods between sets offer an emotional advantage for many, as feeling aerobically fresh throughout the weight training workout allows a bodybuilder to devote strict mental focus upon each rep, without a feeling of overall body fatigue that drains motivation. Yet, there are certain bodybuilders who because of their schedules are incapable of devoting more than a brief period to weight lifting sessions, and therefore must maintain the shortest possible rest periods in order to target as many muscles as possible during their brief workout time frame. In such a scenario, very short rest periods between weight training sets are acceptable, as doing so is far superior to eliminating exercises, abandoning training for certain muscles, or training each body part on a less frequent basis.

Other bodybuilders simply despise extending rest periods between sets, as they feel far more likely to complete a weight training workout session with maximum focus when they avoid idle time, therefore, in such a scenario, shorter rest periods are acceptable, as making a weight training session realistic to continually pursue is one of the most important factors leading to considerable muscle gain, and if longer rest periods cause frustration, then reducing rest to the maximum length that feels tolerable is a wise practice. But for any weight lifter who wishes to produce the greatest amount of muscle gain, and has the time and emotional commitment to extend rest between sets sufficiently so that a weight training workout gravitates away from a cardiovascular emphasis towards a strictly muscle building focus, then this is the ideal tactic to implement.

Remember that aerobic workouts are aimed at enhancing heart health and increasing metabolism for added fat burning, but they are not designed to produce substantial muscle mass, and thus the best environment for muscle growth is one where the weight training workout session does not stimulate the cardiovascular system in any substantial way, as crossing such a threshold can begin to greatly limit muscle growth potential.