Chaturanga - pin your elbows to your side. Once you get down about halfway to where you elbows are pressed into your ribs.stay there no need to go any lower. Going lower puts a lot of stress on the shoulder.
Abdominal Exercises: The swiss ball (also known as the exercise ball) is not just for women! I don’t know why, but I have never seen a man use one at the gym. They are an AMAZING workout tool! So… Get your fancy pants on one and work it!