This is a great beginner exercise for training core stability.
- Place a stability ball at one end of an exercise mat. Kneel just behind the ball and place your forearms on the ball.
- Exhale, press into your forearms and lift your knees slightly off of the mat. Hold for 5-10 seconds, inhale, then lower yourself back to the start position. Repeat the exercise 5-8 times, rest, then repeat the entire exercise sequence if desired.