Encouraging him to take his time and fill his balls to the utmost brim by taking his shirt off and turn his hat to the back. The turned cap functions like a tap, releasing all the nerdiness away from the brain to make way for new jock memories that needed its space before he released all those nerd juices out from his body. If that happens, all the nerdiness will be successfully suctioned by the balls and will be released in full so nothing's gonna left except the imprint of a jock bro, which certainly fits the improving body.