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.
The Runner's Hamstring and Calf Stretch. You can do the runner's stretch to improve hamstring and calf flexibility. The runner's stretch is a common flexibility exercise for your hamstrings or calf muscles. Stand one foot from a wall and place your hands on the wall at shoulder height, shoulder-width apart. Take a step back with one leg while pushing into the wall. Keep your back straight and press your heels into the floor.