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.
Pull toes toward shin with hand until you feel a stretch in arch. Run your opposite hand along sole of foot; you should feel a taut band of tissue. Do 10 stretches, holding each for 10 seconds. Then stand and massage your foot by rolling it on a golf ball or full water bottle. To reduce pain, wear supportive shoes or sandals with a contoured footbed at all times. Choose walking shoes that are not too flexible in the middle.