A rep is a repetition — that is, the number of times you do an exercise before you take a short break. A set is a group of repetitions, like two sets of 15 reps. Strength training is a type of ...
Long ago, runners and coaches learned that intense speed work (VO2 Max workouts like 400-800m intervals at 3,000m pace) and anaerobic training (lactic acid-producing workouts like 300m repeats at ...
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