Cross training is a good way to increase your strength, fitness, and stamina. Cross training involves a little bit of everything. You would do cardiovascular workouts, body weight workouts, a little weight lifting, and running workouts. This get’s your whole body involved and helps increase your stamina dramatically. A good example of cross training would me marine training. The marines do a lot of this. Those opstical courses they do is a good example of cross training. They use their body weight by pulling themselves up ropes and walls. They balance themselves as they run across balance beams. They even have to put their bodies in awkward postions when having to crawl through things. I know as college students you don’t have access to a obstical course like this but you can be creative and make your own using cones, ropes, and boards. There are even kits that you can buy that have a variety of different things such as this nike sparq kit http://www.sparqtraining.com/. Cross training should be very intese throughout the workout and ends up being a good cardiovascular workout.