Should he want "Should he want a red shirt, we have them here." "Should he want that expensive car?" He wants a red shirt. He wants a car. Confusing, I know. Sorry!P.S. Your title has errors!
This depends a bit on their use. If it is for kids that are growing, then it may be a good idea.When it is cold they can wear en extra pair of socks to make them fit better. This also makes feet...
its not mins. its hours, im not a trainer or anything but i would guess around 2 hours a day 5 days a week, but i wouold personally go to a trainer if your serious about it