You're familiar with the push-up, but how about the push-away? It's an unexpectedly effective way to work your core and shoulders and get your heart rate up, says fitness expert Lacey Stone, who uses it in her Extreme Bootcamp app for iPhone and iPad.
What it does
The movement engages your abdominal muscles to help you stabilize, and at the same time works your shoulders, chest and triceps.
What to do
Start in a pike position, with knees slightly bent and hands on the ground in a diamond shape with your elbows slightly bent and pointing out to the sides of the room.
Bending your arms, lower to just above the ground and then, with your abs tucked in, push away from the floor until you're hovering in a bent-over position with a flat back for a beat. Your weight should move back into your heels.
Let gravity take you back down to the floor. Repeat the push-and-return movement.
On your final repetition, walk your hands in and roll up one vertebra at a time.
Do three sets of 10 to 12 repetitions.