Sitting Punch Knee Tap on a padded stool

Expert Advice

Keep your core engaged throughout the movement to stabilize your torso and enhance the workout for your abs.

Sit on the edge of a padded stool with feet flat on the floor.
Engage your core and sit up straight.
Alternate punching forward with each arm while simultaneously tapping the opposite knee.
Continue alternating sides for the desired number of repetitions.