"This well-liked (and legal) drug briefly quickens your pulse, however once consumed in regular amounts, is totally safe and will even be sensible for your heart. A review revealed within the journal Electrophysiology found that ingesting up to three hundred milligrams of caffein on a daily basis appeared safe, and will even shield against rhythm disorders. whereas energy drinks and sugar-sweetened beverages square measure best avoided, low and tea seem safe supported large-scale, population-based studies and irregular clinical trials. for many patients, even those with a history of previous cardiac arrhythmia, there's no have to be compelled to avoid caffeinated beverages."—Dr. Michos