 You either lift for six months. The range is usually six months to a year and a half where your muscles haven't been stimulated quite like they have with lifting, and you're going to pack on muscle. You're going to pack on a bunch of good tendons and all that. But at that point, that's when you start to need to take it more seriously is when you see that slow down, and that's when you need to be more calculated with what you're doing exactly.