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.
+ More. As a runner, I know that food is fuel â and the better the fuel I put into my body, the better the performance my body gives me. What you eat 30 to 60 minutes before a run can dictate your performance; thus, it's important to make wise, healthy pre-run food choices.When training for a race, it's important to eat before your long runs (those that last more than an hour) and any key workout, such as hill repeats, a tempo run or a track workout.. Eat foods that are easily digested âthose that are low in fat and fiber. 4. Wait 30 minutes after eating before you run. This gives the body enough time to get the digestive process started and give you enough fuel to get moving. It will also prevent you from getting a cramp or feeling too weighed down. 5.