 Your heart produces this super strong electromagnetic field about 5,000 times stronger than your brains. As your emotions change, your heart's force field also changes. So, when you're all happy and excited, your heart's force field gets even stronger, and the patterns of its waves start dancing differently. When you're in a positive state, your body starts dancing to this smooth, well-organized rhythm. But when you're down in the dumps with negative emotions, your body's rhythm turns into a bit of a chaotic dance party, that's because negative emotions form disjointed rhythms.