One of the body parts that you want to prepare for sports is your feet.
The foot is a very small part of the body, but when exercising, it is the only part of the body that touches the ground. Since the soles of the feet support the entire weight and move the body, the burden on the feet is considerable.
For example, it is thought that if a man weighing 60 kg walks, it will take 1.5 times more, and if running, it will take 3-4 times more.
I think that care is needed only for the feet that are heavily loaded.