Physiological Factors Of Laugh. 1. Boosts Cardiovascular Health Laughter increases blood flow and improves the function of blood vessels, which can reduce the risk of heart diseases. 2. Enhances Oxygen Intake Laughing increases oxygen intake, stimulating the heart, lungs, and muscles while boosting energy. 3.Releases Endorphins Laughter triggers the release of endorphins, the body’s natural feel-good chemicals, which act as painkillers and stress relievers. 4. Relaxes Muscles A good laugh relieves physical tension and stress, relaxing muscles for up to 45 minutes afterward. 5.Strengthens the Immune System Laughter decreases stress hormones like cortisol and increases immune cells and infection-fighting antibodies, boosting resistance to disease. 6.Lowers Stress Hormones By reducing the levels of adrenaline and cortisol, laughter helps your body recover from the harmful effects of stress. Psychol...