Push-Ups

Since you'll be on all fours, you may be more comfortable performing these exercises on a yoga mat, towel or any other soft surface you can put between you and the floor.

This exercise works your pectoralis major, commonly called pecs, which are your chest muscles, and your biceps, which are the muscles on the front side of your upper arm.c 

1. Lie on the ground on your stomach.
2. Prop yourself up on your hands, making sure that your arms are shoulder-width apart (shoulders over elbows over wrists) and your back is straight. Your whole body should be in one line from the top of your head to your feet and nothing should touch the ground except your hands and your feet (or knees).
3. By bending your elbows, lower your chest to the ground. Don't lead with your head and don't allow your back to arch on the way down.

Modified push-ups: Start with your knees touching the ground and lower the upper half of your body to the ground. These are easier to do since you have less body weight to support.

Diamond push-ups: From the standard start position, bring your hands together so that your hands form a diamond between your thumbs and forefingers. These target your triceps more than your chest.

Clap push-ups: Start with a standard push-up, then on the upward motion, give yourself an extra push so that your hands come off the ground and you clap your hands once before returning to the starting position.

Incline push-ups: Perform a standard push-up with your feet elevate on a weight bench or chair.

Wide-grip push-ups: From the standard start position, set your hands wider but still in line with your shoulders. These target your chest muscles more than arms.

One-armed push-ups: Modify the standard push-up position by setting your feet a little wider and balance on only one hand. These require a lot more balance and core strength.