And because there are more people doing it part time, where they donât need to make much of a profit in order to pay their bills, itâs going to be harder and harder for people in the industry who do rely upon photography to pay their bills to do so.
The contraction period, or contraction. time, is the time it takes the muscle to. reach its peak contraction after the latent. period. The relaxation period is the time. the muscle takes to return to resting. tension after reaching its peak. contraction. Muscles rely on two physiological. principles to bring about productive. motion: recruitment and summation.
As you learned in the article âHow to Build Muscle â muscles grow and become stronger when they are subjected to forces that cause tiny tears in the muscle fibers. During the recovery period after a workout, the body repairs these fibers, and builds new blood vessels to the stressed area. Additionally, the energy-generating components of the cells develop a higher work capacity, and bone density increases.