In science, mechanical energy is the sum of potential energy and kinetic energy. It is the energy associated with the motion and position of an object.The law of conservation of mechanical energy states that in an isolated system that is only subject to conservative forces the mechanical energy is constant.n science, mechanical energy is the sum of potential energy and kinetic energy. It is the energy associated with the motion and position of an object.
As with the standing shin stretch, the cross-over stretch is well-suited for pre- and post-running stretching. You can perform this stretch with or without shoes. Start standing with your feet together. Cross your right leg in front of your left leg and place the tops of your pointed right toes on the ground.
Rating Newest Oldest. Best Answer: my coaches used to say have pasta the night before and drink plenty of water. my cross country coach used to say to stop eating 3hrs before a race, and to stop drinking 2hrs before ur race. Uhh, what else, no dairy close to when it's time for you to run, it'll make you cramp up.at food thats rich in carbs like rice or pasta the night before and have an early night. you MUST eat before a run you need the energy but eat at least an hour before so that it can digest. always do a warm up before the run to get the blood pumping round the body, a gentle jog will do.