If you ever watch a sprinter, the ball of their foot is the only thing that ever hits the track. So when I stand in these legs, my hamstring and my glutes are contracted, as they would be had I had feet and were standing on the ball of my feet.
Dacă te uiţi atent la un sprinter partea din faţă a labei piciorului e singura care atinge pista când stau pe picioarele astea muşchii mei sunt contractati la fel ca atunci când aş avea picioare şi aş sta pe partea din faţă a labei piciorului.