I have been wondering if there is any type of training that makes your muscles more dense and “hard”. I understand low bf is importantant here but is that really all there is to it? I have heard on some forums about muscle maturity and people claiming your muscles will look better with age and others say to stick to the 3-5 rep range. Never seen any teen or similar with this kind of density.
Here is a picture of what I mean, noticed how incredibly dense he looks.