Cocoa beans are the most popular source of theobromine. You will also find it in tea, Arabica coffee, guarana, and yerba mate. Theobromine is the most abundant methylxanthine in chocolate. Similarly to caffeine, it can stimulate the central nervous system and heart function. It also has the capacity to produce both psychological and physical relaxation. It positively affects the nervous system, increases physical performance, reduces blood pressure and cortisol level, supports the cardiovascular system, has neuroprotective properties, and helps increase blood flow to the brain, thus improving cognitive performance.  The Longevity dietary supplement contains cocoa (Theobroma cacao L.) seed extract standardized to 24% of theobromine DER 30:1.