I recall doing exactly that in junior high, and increasing my chin-up count from 0 to 12 or so within 3-4 months, without consciously worrying about it. My P.E. teacher was impressed. In retrospect, going through puberty must have helped, too.
I recall doing exactly that in junior high, and increasing my chin-up count from 0 to 12 or so within 3-4 months, without consciously worrying about it. My P.E. teacher was impressed. In retrospect, going through puberty must have helped, too.