Body-Up

Strength · No equipment · Intermediate

How to do it

Assume a plank position on the ground. You should be supporting your bodyweight on your toes and forearms, keeping your torso straight. Your forearms should be shoulder-width apart. This will be your starting position.
Pressing your palms firmly into the ground, extend through the elbows to raise your body from the ground. Keep your torso rigid as you perform the movement.
Slowly lower your forearms back to the ground by allowing the elbows to flex.
Repeat.

Works

Triceps

Also: Abdominals, Forearms

When to stop

Stop and rest if you feel chest pain or pressure, are more short of breath than you'd expect, feel dizzy or faint, or have sudden pain. If chest pain or faintness doesn't pass when you rest, call 911.

Photos and steps from free-exercise-db (public domain). Back to your plan