Plank

An isometric core exercise that strengthens the abdominals, back, and shoulders, improving core stability.

Instructions

1. 1. Start in a push-up position, but rest on your forearms instead of your hands.
2. 2. Keep your body in a straight line from head to heels.
3. 3. Engage your core and hold the position for as long as possible.
4. 4. Avoid letting your hips sag or raising them too high.
5. 5. Repeat for the desired time or repetitions.