9. Coffee for next-day energy
A recent study published in the Journal of Applied Physiology found that glycogen, the body’s storage form of carbohydrates, is replenished more rapidly when athletes consume both carbs and caffeine following exhaustive exercise. Compared to carbs alone, the combo resulted in a 66% increase in muscle glycogen 4 hours after intense exercise. That’s significant because packing more fuel into the energy “piggy banks” within your muscles means that the next time you train or perform, you’ve upped your ability to exercise harder or longer. Drinking large amounts of coffee can cause a spike in blood pressure and heart rate. Studies have suggested that coffee increases heart rate, thanks to caffeine’s impact on hormones and neurotransmitters. But drinking coffee in moderation—one to three cups per day–shouldn’t have a noticeable impact on a healthy adult.