Coffee before exercise may harm the heart :coffee:
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Caffeine blocks adenosine receptors; adenosine is a naturally occurring coronary vasodilator. The effect of caffeine on the coronary circulation apparently does not outweigh it's performance-enhancing actions in athletes without heart disease.
Caffeine blocks adenosine receptors; adenosine is a naturally occurring coronary vasodilator. The effect of caffeine on the coronary circulation apparently does not outweigh it's performance-enhancing actions in athletes without heart disease.
