If you love to run but hate running downhill because of knee pain, give this technique a try. Run downhill backwards to take pressure off your knees. Step slowly and with control to avoid smacking your feet down, which will prevent your joints from jarring. Not only will it relieve discomfort in your knees, but working your muscles differently will make your legs stronger and also help prevent overuse injuries in other areas of your body. Just be sure to alternate looking over both shoulders so you don't strain your neck.