TestRX dysfunction, lack of clitoral sensitivity, loss of sexual desire Immune system : By a decrease in T lymphocytes and immune defenses. The result is a feeling of "discomfort", accentuated by changes in the body image (obesity, wrinkles, baldness, brown spots, stiffness and joint pain ... and certain behaviors (permanent fatigue, Depression, lack of self confidence, restless sleep, loss of memory, lack of creativity, hot flushes. and physical activity. There are mainly hormones that intervene in physical exercise: Growth hormone Estrogens Thyroxine epinephrine insulin Endorphins Glucagon Muscle growth is based on coordinated actions of hormones: steroid hormones, somatotropic axis (GHRH, GH, .