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In this context, caffeine can increase the heart beats of many organisms. Caffeine binds to receptors on the surface of heart muscle cells which leads to an increase in the level of cAMP inside the cells which then increases the heart rate. This creates an overall effect to increase the rate of glycolysis and the amount of ATP available for muscle contraction and relaxation.
Explanation. Caffeine's effects on your heart rate occur indirectly, as a result of its effect on your nervous system. It has a chemical structure similar to adenosine, a chemical naturally found in the brain.affeine is also found in soda and tea as well as in some prescription and non-prescription medications, such as pain relievers and cold medications. Caffeine has a number of metabolic effects on the body and may increase the heart rate in some instances.