No Need to Stand! This Arms and Abs Dumbbell Workout Is All on the Floor

Reps: 10, each arm

• Lie on your back with your heels about a foot away from your butt. Hold a dumbbell in your left hand and bring both hands to the ceiling.
• Bend your left elbow, lowering your upper arm to floor. Exhale and straighten your elbow, pressing the weight back to the ceiling to complete a rep.
• Do 10 reps with each arm to create a set.

This exercise will work your pecs, but your abs need to work to stabilize your torso since you're working one arm at a time.