From what the PRMC guide says, I believe it is arms shoulder width apart (note the guys elbows are NOT by his side) and then down so the arms are at 90 degrees, about a fists height off the floor and then up again.
I've heard loads about keeping the elbows (and hence upper arm) tucked in by your side which makes it more difficult. if this is rubbish, how is a Marine press-up any different to a civvie press-up?? Shed some light Ro55, me old mucker before you depart for CTC!!!
Oh, and Wilson, got my adidas a3s today as you suggested, great pair of shoes! Incidentally, have you ever thought about entering the sales arena? Recruit instructors are going to see a vast and unexplainable surge in recruits wearing a3s because of you

