Question

How could laughter possibly help prevent a cold?

Answer 1

Because it helps the immune system by increasing antibodies, which can fight bacteria, viruses, and other bodies invaders

Answer 2

Laughter can prevent a cold in many of ways by stimulate many organs. Laughter enhances your intake of oxygen-rich air, stimulates your heart, lungs and muscles, and increases the endorphins that are released by your brain. Activate and relieve your stress response.