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.
After you have stretched the bottom muscles of your foot, you can do these exercises to start strengthening the muscles of your foot. 1  Towel pickup: With your heel on the ground, pick up a towel with your toes.  Balance and reach exercises: Stand next to a chair with your injured leg farther from the chair.