Planks work almost every muscle in your body. Some consider it the ultimate exercise. It will definitely work your entire core, including all of the big three that we discussed earlier.
- Begin in a push-up position, balanced on your hands and toes. Your hands will be directly under your shoulders. Your feet will be hip-width apart.
- Push all the way up until your arms are fully extended and lock your elbows.
- Keep your body in a straight line and brace your core (draw your belly button in toward your spine).
- Hold for 30-45 seconds.
- Rest and repeat for 3-4 sets.