I never laughed at a fattie that I saw putting in actual effort. The ones that go at it with focus and determination to improve their lives. Back when I was an SF instructor, I remember an 18-Xray student took his shirt off at PT and he had folds of loose skin around his midsection from losing over 200lbs because he wanted to join SF. He just decided one day, and then did it. That kind of willpower can make a man dangerous, and cannot be bought for money.