Per Shawn Johnson's official webpage, she practices four hours a day on weekdays, five or six hours on Saturday, and rests on Sundays.
works out 4 hours a day and 5 to 6 hours on Saturday with Sundays off. A typical practice consists of practicing every event for about an hour.
I practice about 4 hours a day
How many hours does a professional basketball player practice?
well he would get there around 9:00pm and leave around 12:00am.
saina nehwal practice for 8 hours in day
Pianists normally practice about 8~9 hours everyday.