The heavier an athlete was, the more of a burden his body had to bear. For an athlete who did hurdles, if he was heavy, he would consume more energy every time he hurdled, meaning his ankle would have to withstand more pressure every time he landed.
Therefore, an athlete of the 110m hurdles was much lighter than a 100m dash athlete. Feixiang Lin's height was around 190 centimeters, and his weight had reached its peak at 160 pounds. For an athlete of the 100m dash, who was the same height as Feixiang Lin, their weight was probably closer to 180 pounds, or even more in some cases.
Because Feixiang Lin had not taken his training seriously in the last two years or control his diet, he was already over 180 pounds. It was only due to his height that he did not look fat.