When you exercise regularly, the cells in your adrenal cortex (located inside your adrenal glands) release less cortisol, the notorious stress hormone. With less cortisol, you feel calmer. With regular exercise, cells throughout your body become more sensitive to insulin, which means your blood sugar is more stable. If you want to avoid the common midlife trifecta of stress, belly weight gain, and high blood sugar, you need to exercise.
