as much as she needs, so that she is not fat
I think that people should get at least 2 to 3 hours of exercise every day :)
It all depends on how much she eats and if she gets enough exercise each day by going on walks or even just playing on an activity carpet.
At least 3 times a week.
Nothing
It means that you should read to exercise your brain as much as you should exercise your body. Example: I am a bookworm, but I love volleyball and track. I'm pretty good at football, too. For a girl, my neighbor says. ;-D
There is no standard limit to the amount of exercise someone should get each week. Listen to your body to determine if you are getting enough or too much exercise.
7 hours a week, for champions
he/she should get 30 min. of exercise
How far could is the question you want to ask. How far should is approx to the body weight , stature and health risks that the girl would obtain if she over exerted her self. A mile no more at that age , she will have a high metabolism . It isn't very necessary for her to run because she already should be very active.
you should at least exercise 30 minutes a day
A eleven year old girl of that age should weigh around 45-55 kg. Depends on the girls diet and how much exercise they get, but that is the standard average weight of an eleven year old girl.