2. Dumbbell full-body exercise program?

Equipment: Exercise 3 times a week (40 -60 minutes each time). Do 5 groups for each of the following actions, and do 20RM for one group. (How to understand RM? ? Suppose you do an action with an 8KG dumbbell, and a group can do it up to 8 times. That's 8rm. ? We need you to exercise 20rm times here, so you should reduce the weight of dumbbells accordingly until a group can do 20rm at most. ? )