Like any physical activity, it is a good idea to stretch out before and after you hike. But don't just pay attention to your legs when you stretch; hiking requires agility in all of your body. Here are two basic stretches. For hamstrings: Bend your knee so that your foot reaches toward your backside. Reach around and grab your ankle, pulling the foot close to your body. Repeat on both sides. For neck and head: Drop your left ear down toward your left shoulder. Hold for 15 seconds. Repeat on right side.