" Some sources point to the origin of a runner's high being increased endorphin production as a result of exercise. Running injuries There are many injuries associated with running (due to it being a high impact activity) . Common injuries are "runner's knee" (pain in the knee), shin splints, pulled muscles (especially the hamstring), "jogger's nipple" (soreness of the nipple due to friction), twisted ankles, and Iliotibial Band Syndrome. The most common running related injuries are due to over-use. Repetitive stress on the same tissues without enough time for recovery or due to improper form or muscle imbalances, leads to many of the above. Generally these can be minimized by warming up beforehand, wearing proper running shoes, improving running form, performing strengthening exercises, and getting enough rest. There is a very strong consensus among the running and scientific community that all of those can be very effective in minimizing or recovering from running injuries. Ontario Track And Field Association Another injury prevention method that is very commonly recommended in the running community, but is actually controversial is stretching. While stretching is often recommended as a near requirement to avoid running injuries, the relevant medical literature does not represent as much of a consensus that it is effective. "

" He then traps the other two crewmates in one of the domes that is about to be jettisoned, and they are killed when Lowell releases the dome and blows it up. Lowell then overrides the programming of the service drones so they can perform surgery on his leg, and renames them Huey, Dewey and Louie. They fly through the rings of Saturn. The three drones are outside the ship; Louie's leg gets stuck and he is ultimately blown away from the ship due to the turbulence of the rings. Huey is badly damaged in an accident when Lowell runs into it with one of the ships buggies. After almost a year alone in space, the radio again begins chattering - "Valley Forge, this is Berkshire. " Lowell realizes that his crime is soon to be discovered by a rescue spacecraft, and not only will he face imprisonment or worse, the dome will be destroyed after all. Physics And Track And Field Lowell chooses to leave Dewey in charge of the last dome, jettison it to safety, and destroy himself and the "Valley Forge" with the last of the onboard nuclear weapons. The final, ostensibly poignant scene is of the forest greenhouse tended by the sole remaining robot, with a battered watering can. "