See those arms? He's clearly been banging out the pullups and chinups, and that musculiture is what gives him the speed to outkick skinny africans and americans. If he'd put on a little more uper body mass and take some suplements, I bet he could break 3:49.
If we want to win at the next Olympics, our coaches should take note. Strength is speed!!!!
https://www.twincities.com/wp-content/uploads/2016/08/qwtemp35.jpg?w=868