As harsh as it seems, they train about 16 hours a day. Being a sports star in China basically translates into who's body can take the most abuse and not fall apart. This is also why their bodies are pretty much trashed by age 20
It depends whether they are professional or amateurish, professionals need at least four hours per day, amateurs vary
i did 20 a week
An Aerial is a gymnastic trick that is a cartwheel without putting your hands on the ground. As with any gymnastic tricks, it will become easier with practice.
saina nehwal practice for 8 hours in day
Pianists normally practice about 8~9 hours everyday.
They practice probably anywhere from 4 to 6 hours a day.
a lot of hours
10000 hours of practice