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.
Standing Shin Stretch. Using a wall or other solid surface to support your weight, you can achieve a solid stretch from a fully upright position. Stand facing a wall, and place your hands on the wall. Shifting your weight slightly to your left leg, extend your right leg directly behind you, resting the tops of your toes on the ground.