Stress is a physical and mental manifestation of a feeling of will. Speaking in clear language, control over the voltage allows the actor to correctly perform movements - not mechanically, but not emphasized hyperbolized or carelessly.
We represent a huge stone. We try to move it, resting on it with our hands and foot, keeping the balance on the other leg. We change the leg. Continue moving, resting on the stone with the left shoulder and right hand. We recreate other possible variants of displacement. Task: keep the balance on one leg, gradually increase the tension.
We stand on one leg for as long as we can. Usually to extend this time helps to focus on an imaginary object. You can, for example, mentally go through the daily way from home to work or to the store. From an excessive load of muscle after a while relax, and muscle tension after returning to normal will pass.