Most doctors recommend 30 minutes to an hour per day, but I say ALL DAY if they can!
Up to 10 hours
at least one hour a day, but the more the better!
It should be refrigerated after about 2 hours and should not remain at room temperature for "many hours".
At least 8.
why should you when you have a couch, tv, and potato chips.
That depends greatly on who the children are, how old they are, where they are in the world, etc. There is not one correct answer to this question.
Between 1-2 hours each day. About 3 days per week is what kids should get.
About 75% of the kids want to have sports in their elementary because its fun and they should focus on it then dong something else outside of school.
Zeus had too many children outside his marriage to count!
It depends on their age. For eg. an infant sleeps 10 hours and over while a 12 year old will be content with a maximum of 9 hours.
9 hours
about 4000 hours