1) Arm exercise 2) Arm-y exercise 3) Calisthenics move 4) Calisthenics standby 5) Daily-dozen unit 6) Exercise one is prone to do 7) Exercise unit 8) Fitness-test rep 9) Gym exercise 10) Like some bras 11) Pecs strengthener 12) Popular type of sleeve 13) Press-up 14) Upper body strengthener 15) Workout exercise 
[n] - an arm exercise performed lying face to the floor and pushing the body up and down with the arms
press-up noun an arm exercise performed lying face to the floor and pushing the body up and down with the arms