* Proper push ups work the triceps, shoulders, back and chest muscles. * Begin on your stomach with your legs extended behind you. * Place your hands even with your chest, just below your shoulders, and spread your fingers slightly. * Push up onto your hands and toes and brace your core to keep your hips from sagging. Your arms should be fully extended. * Point your face at the floor. * Bend at the elbows to lower your chest, stomach and legs to the floor. * Don’t flare your elbows. Keep them within 45 degrees of your body. * Engaging your triceps, push your body back up until your arms are straight again. This is one rep. * Complete as many reps as you can.