[User23]

This is absolutely false. But if a man wants an impressive physique naturally he’d best start about the time he hits puberty. The window of quad digit free testosterone isn’t open for long. If you hear about 30 or 40 something men putting on 20+ lbs of muscle in 6 months you can rest assured they’re supplementing androgens.

However in these days of endocrine disruption and secular testosterone decline, it’s not unreasonable to assume that anyone dedicated enough has at least considered gear.