There are women-only gyms and men-only gyms, so why not kids-only gyms?

At first the idea seems a little preposterous, but if you think about it, one of the reasons that kids don't go out and play as much these days is because neighborhoods and streets are not as safe as in years past. Increased traffic, child predators, and drug pushers make it seem more desirable in some locations to create a safe environment where kids can go to get the exercise they need.

Kids-only gyms are springing up across the country for tots to teens. Classes and programs are designed for different age groups, from movement exploration with a parent alongside for the tiniest ones to non-competitive gymnastics for older kids.

How to choose a gym? Visit before you sign up. Look for these things:

• Non-competitive fun atmosphere
• Smallest children are accompanied by parents
• No children left unattended
• Equipment is in good repair
• Staff have adequate training in exercise science and child development