There are many people who believe that coffee is bad for you. This may be the case when you drink 10 or 20 cups of coffee a day. However, drinking even as much as 5 cups of coffee has been shown to help your health. Coffee stimulates the metabolism and increases energy, which helps people lose fat and be in better health.
No, drinking coffee does not improve physical health, though if drank in moderation, it does not worsen health either. Coffee, like most other substances, is fine if consumed in moderation and does not affect health much one way or the other. Coffee can provide short term boosts in efficiency and awareness, however.