Plank

The plank is an awesome full body exercise that works several muscles simultaneous. Definitely a must in any exercise routine for the added benefits. First, you develop core strength and flexibility. Second, you tone the abdominals. Third, you improve your posture and reduce back pain. Also, burns calories for weight loss.

Whenever adding the this move to your workout, remember these several cues. First, maintain the position. Second, keep your core engaged. Also, maintain your body in a straight line from your head to your feet for proper alignment. Finally, breathe.

Primary muscles:

Abs

Secondary muscles:

Lower back