I haven't pulled the trigger yet on this, because im trying to decide what the best combo would be from Athletix Sports, with the BOGO. Perhaps someone can lend a hand. I want to add lean muscle. Currently using xfa. I am almost 40 and have worked out for many years. I am currently 190lbs at 5"11. I had a 6 month layoff due to injury, but since I started back up, everything is tightening up well.