Answer: Yes, The reason why is because then their child will gain athletic skills from a young age. There are many pros to this idea and it is good to get your child into physical exersize so that the don´t get diabeties when they get older. For example: maybe your friends child had a baby and introduced them into physical exersize as a young child. Then you had a baby and did the opposite. Your friends baby will more likely be way more active than your baby. And will do much more sports than your baby. But there are some cons in this area too. For example: your child that had been introduced to exersize at a young age can get heat strokes and will need to go to the emergency room. Or they will brake a bone or two. But you just got to be very careful when it comes to that stuff and don´t over do it or those things will happen But otherwise it is a very good idea and should be brought into young childrens lives in small doses.