The torso of a runner should be fully stretched and lean slightly forward while running. This positions the body's center of gravity farther forward, which facilitates thrust and may even decrease the strain on the knee joint.
Running with your body slightly bent forward is a way to improve the biomechanics of running. When we do this, we position the body's center of gravity farther, which facilitates thrust and may even lessen the strain on the knee joint. Think of a shooting practice: when you will stop the movement, ie stop it, your body will lean backwards. So a forward bend does the opposite, helps speed up.
True. Without stretching, your torso can receive muscle cramps and/or strains. When running, the torso should be slightly forward to resist the air resistance and keep the body at an equilibrium with the surrounding forces.
The inward flow of sodium ions increases the concentration of positively charged cations in the cell and causes depolarization, where the potential of the cell is higher than the cell's resting potential. The sodium channels close at the peak of the action potential, while potassium continues to leave the cell.
