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.
Being able to touch your toes requires low back, hamstring, and calf flexibility. By statically stretching each of these 3-5 times per week youâll slowly start to see improvements in your flexibility, and eventually be able to touch your toes. To statically stretch your hamstrings, lie on your back and pull lift your thigh so it is perpendicular to the ground. Now, slowly extend your knee, lifting your heel to the ceiling. You should feel a stretch in the back of your leg. Hold this for at least 30 seconds, and repeat 2 more times. Then, switch legs.