In a recent video on the Athlean-X channel, strength coach Jeff Cavaliere C.S.C.S. breaks down the "most effective" workout he uses on leg day to light up the quads, glutes, and hamstrings, based on ...

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 ...