If your legs feel heavy when you sprint, your hip flexors need some attention. Strained hip flexors happen when you’re not strong enough to drive the knee up. You end up over extending and the trailing leg gets too stretched out. Not only are you slower, but you’re also asking for an injury. Good news, you can fix it! But it’s more than just stretching. You need targeted stretch work too! And if you want help on that, I have the exact process laid out for you. Ready To Rock will unlock and restore your hips in a month. It’s as close to magic as you get without actually being magic.