The Ballet Coach
In this Ballet Coach guide: Chances are you remember these lyrics from your childhood. The point is that all your bones, and hence, all your muscles groups, are connected together. When one is weak, it upsets the balance and affects how your other muscles work. For example, the hamstring helps keep your knees aligned properly, so if you have a weak hamstring, you will increase your risk of knee injury. The following exercises take just 20-30 minutes, and target those trouble spots you know, the ones that are extra-sore after that marathon rehearsal.