Cocoa extract contains naturally occurring γ-butyric acid(GABA) which is beneficial in lowering elevated blood pressure, aiding blood circulation and calming nervousness. The health promoting effects of cocoa extract are contributed by the synergisms of theobromine and polyphenols. In addition, the relaxation effect of cocoa extract is believed to be an attribution of GABA. Clinical reserches revealed that theobromine inhibits fat accumulation while cocoa polyphenols increase fat metabolism.