Forth,happy hormone
If you’re finding yourself a bit more moody than usual, it could be that you’re not exercising enough. Exercise improves blood flow to the brain, which helps to increase serotonin production. Guess what serotonin’s pseudonym is? The "happy hormone." And since exercise increases serotonin production, it can help make you happier and ease mood swings. You’ve probably heard of the "runner’s high." That is caused by serotonin production in the brain, which is increased through regular exercise. Moderate exercise is also helpful in easing PMS symptoms and the associated mood swings