Green tea and coffee are two popular beverages that can increase alertness and are associated with a range of health benefits, including supporting heart health. However, the best one for boosting energy and protecting your cardiovascular system depends on your goals and individual needs. Coffee Provides Quick Energy, While Green Tea Supports Sustained Alertness
Whether you get better energy from green tea or coffee depends on your goals. While caffeine content varies, coffee generally has more per serving—about 80 to 100 milligrams (mg) per 8 ounces compared with 25 to 50 mg in the same amount of green tea.23 “The higher concentration of caffeine in coffee gives people a quicker and bigger boost of energy,” said Natasha Bhuyan, MD, a family physician and national medical director at One Medical.
Green tea, on the other hand, may not provide an immediate jolt, but it contains compounds that support more sustained alertness. “Green tea contains L-theanine, which is an amino acid that can promote calm alertness and reduce jitteriness,” Alison Swiggard, MS, RDN, LD, a registered dietitian with CV Wellbeing, told Health.
I've got nothing against tea:
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