Start in a plank position with your hands on the top of the coffee table.
Pull your abs in and squeeze your glutes to stabilize your core. Inhale and bend your elbows to lower your head toward the table; exhale, pulling your navel to the spine, and straighten your arms, returning to plank.
Too easy? Flip your body around so your feet are on the table and do push-ups this way.
Complete as many push-ups as you can in 40 seconds, followed by a 20-second rest.
