There are two kinds of leggings sandbags, one is sand leggings, which are relatively wide and tied to the calf. Pay attention to wearing stockings or bandages, or you will move. The other one is narrow, which is dedicated to the ankle, that is, the ankle. \x0d\ Either way, be careful not to stick it for too long, otherwise the blood will not circulate. \x0d\ Wearing sandbags on your feet can really increase your leg strength, but it will also bring some negative effects. First of all, the increase in leg weight will put a greater burden on your knee joint than usual, which is not conducive to your leg development (especially considering your age). Secondly, in fact, sandbags on the legs are more about exercising the lateral movement ability of the legs, which is not obvious for the growth of bouncing, and will make the calves thicker, and make the knees bear more weight when doing actions, and it is easy to strain the knees over time. \x0d\ Tie sandbags on your legs to exercise. Tie sandbags only when they are used, and untie them after they are used. Note: Don't take too long; The weight of sandbags should be what you can bear, not a burden; And the method is proper and gentle. In this way, there is no negative impact, but it will promote physical health, height and weight loss.