I have a friend that's a professional weight lifter. Actually he's a retired weight lifter. He's tired of his huge size so he's been looking into toning down his muscle size. He still wants to exercise and stay fit, but just tone down his muscle mass a bit. He was telling about the super pump 250. It's very popular with professional athletes. I was really amazed when he was telling me about his. I'm happy that my friend found something that helps.