4 moves for a 6-pack. 3 times a week, do 3 set of 20 reps of each move without r

4 moves for a 6-pack. 3 times a week, do 3 set of 20 reps of each move without r

4 moves for a 6-pack. 3 times a week, do 3 set of 20 reps of each move without resting