Caffeine increases Intellectual Performance-Caffeine doesn't make us stronger or smarter but it does help us perform better gaining clarity and focus. Coffee is good for the heart-Several studies show that people who drink 3-5 cups per day are at a lesser risk of developing heart disease. People with high blood pressure should consume coffee in moderation. Caffeine difference between coffee and tea-Caffeine in coffee gets in your blood within minutes and gives a surge of energy. Caffeine in tea acts slower and gives a gentler energy boost. Not all coffees and teas are the same but generally, coffee contains between 96 and 165 mg of caffeine and tea is generally between 25 and 50 mg of caffeine.