Another vital reason to keep the rep count low, per set and per training session, is to leave enough energy for other things—practicing sport skills, being ready to fulfill your duty on the battlefield or just enjoying your day and not dragging your tail through it. Bulgarian elite gymnastics coach Ivan Ivanov believes that the purpose of a training session is to “store energy” in the body rather than exhaust it. That is a powerful mindset. In Ivanov’s experience, 100 repetitions per explosive movement hit the spot—and these must be done daily.