Also just the feeling of being firm and toned. When you bump into something or someone brushes by you in the street, that's when you feel the difference. Whatever you bump into doesn't sink into your flab, it bounces off instead. That's what I loved about being all toned from gym, you sort of hold yourself more confidently and it feels great... (I've since let things slide recently, it comes and goes! I'll be back there soon, I don't do gym all year.)