Is it possible to build a tremendous aesthetic physique in 30 minutes? Build muscle in half an hour is quite a reasonable amount of time. If you want to accomplish anabolism in half an hour plan, your workouts will less rest time in between sets. Remember, you only have half an hour to achieve this feat. Half hour training sessions are for those people who are very time-sensitive and have a tiny window of opportunity for the performance exercise needed daily. What is the difference between a half-hour session and an hour? Movements should be performed faster with the proper form, of course, and try to keep breaks to a minimum. You only should take a small rest when water is needed.