Bird Dog stability Ball
The bird dog is bodyweight exercise that strengthens the core, more specifically, lower back, glutes and thighs.
Slik gjør du det
Place the stability ball under your stomach while standing on all fours.
Put your hands under your shoulders and up to the ball with your thighs.
Slowly lift the opposite arm and leg while keeping your balance on the ball.
Repeat on the other side until each side has done the same number of reps.