My 10 year old sister wants to work out at the gym?

I'm over 18, I like to work out to stay fit. my younger sister is a little overweight, she doesn't worry too much about it but has told me that she wants to go to the gym with me. my parents are okay with it too. is it okay to bring a 10 year old to the gym to work out? she has a doctor's appointment... show more I'm over 18, I like to work out to stay fit. my younger sister is a little overweight, she doesn't worry too much about it but has told me that she wants to go to the gym with me. my parents are okay with it too. is it okay to bring a 10 year old to the gym to work out? she has a doctor's appointment comming up and I want to ask her doctor if she can work out and for how long. do gyms allow minors to work out there if they are accompanied by an adult?
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