Sprinting is a fundamental skill. Like swimming, being able to build a fire, and make a shelter, it’s a skill that could save your life. Sprinting is also a kick-ass workout! However, before you head to the track to work on your sprint, it’s important to make sure you go about your workout the right way. Sprinting is surprisingly intense, and a lot of wannabe Usain Bolts end up pulling a hammy or tearing a groin the moment they pick up the pace.  Here are seven tips for making your sprint workouts as safe and productive as possible.  1) WARM...