I would love your opinions on my business idea of a children's gym!

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Hi everyone. I am thinking of opening a gym just for children and would really appreciate your thoughts. It would be based on an adult gym with mini equipment aimed at 3 to 10 year olds. There would be mini bikes hooked up to big plasma screens where children can race each other (or cycle independently), rowing machines, treadmills, twisters and cross trainers. There would also be two big sponge pits where the kids could take a big run and jump into them, a mini zip wire and a climbing wall. I also thought about getting an interactive shadow wall like at Cadbury's world where the children hit, move, wave etc objects (shadows) that fall down the screen. I would also hold classes such as cheerleading, mini step, yoga, ballet and jedi academy based on star wars. I would offer fruit and water during sessions and there would be a healthy eating cafe on site. If possible I am aiming to get some outdoor space for nice days where group activities could take place or equipment could be moved outdoors.
I thought about charging on a pay as you go basis £3.50 per hour or £5.00 per hour and a half The gym would be light, airy, spacious and well staffed by qualified workers. It would also be very secure. What does everyone think?

hmm, im all for kids have the lessons etc, but the thought of a mini-adults' gym is kinda giving me the creeps.

Like someone else said, kids should be outside as much as possible, running in the woods or cycling with their friends, building dens in the summer etc.
I'll be blown if i ever let my 4yr old on a rowing machine or cross trainer.

It all smacks of the attitude of our society today, where kids are being made into little middle class adults etc etc

physical activity for children yes, but gym seems a bitty baby boot camp too formal

Medically
how would you screen children to be safe to participate,
would parents sign a disclosure of health status/fitness to complete
would you have an contra-indications policy
would you have first aiders on site

be aware Subjecting children to additional stress in classes like yoga or aerobics could cause uneven growth rates and anatomical imbalances which may affect their posture and growth. exercise can be detrimental for children who have reduced energy levels or body mass or underlying condition

we go to the park, so i would be unlikely to use

Sorry- I wouldn't go near it with a barge pole. It sounds like an awful idea.

I'd rather go for a walk or bike ride with my children than subject them to boring, reptitive , fun-less exercise.