The minimum age to start going to the gym can vary depending on the gym and location. In general, we allow children as young as 14 or 15 to start working out, as long as they are accompanied by a parent or guardian
It's important to note that even though the minimum age to start working out is mentioned above, this does not mean that children of that age should begin a heavy weight lifting routine. The American Academy of Pediatrics recommends that children under 14 should avoid weight training with heavy resistance and instead focus on activities that promote overall fitness, such as bodyweight exercises, running, and swimming.
It's also recommended that before starting any exercise program, kids should have a checkup with their pediatrician to ensure they are healthy enough for physical activity, especially if they have any pre-existing health conditions.
It's always a good idea for parents to accompany their children to the gym and observe them to ensure they are using the equipment safely and correctly, and also to monitor their progress.