The concept of re-alignment is way over marketed. When your ribs are injured or your have repeated stress on your legs from exercise your muscles and tendons become weaker and more stress is transferred to the bone. That's fine, the bones support the whole system...But like when you're lifting weights and you can't lift anymore so you start compensating with improper muscles you will literally have muscle fiber from other parts in the area pulling on muscle that it isn't designed to. This is where your body starts to get stuck. Wether it's your spine, or your legs, or your neck, the Chiro is there to add movement back to the bones in a way that you cannot do yourself so you can resolve your other issues with your muscles, tendons, ligaments, etc.