we've measured neurotransmitters so when a person actually activates their heart the heart releases a chemical called oxytocin oxytocin is actually love chemical not oxytocin signals nitric oxide nitric oxide signals another chemical called endothelial derived relaxing factor what does that do causes the vessels in your heart to swell you will literally have energy in your heart you will literally feel like your heart is full now once you have that feeling you're not gonna want to trade that feeling for anyone or