Tendon: The soft tissue by which muscle attaches to bone. Tendons are somewhat flexible, but tough. When a tendon becomes inflamed, the condition is referred to as tendonitis.
Research suggests that consuming caffeine can jumpstart your metabolism and help you burn fat. One study, for example, found that in the three hours after consuming coffee, metabolic rates were significantly higher in those who drank coffee than those who did not.
The effects of caffeine are complex. I recall reading some studies that found that caffeine consumption associated with tea or coffee drinking was associated with lower rates of depression. But it is also true that heavy caffeine use can be tied to anxiety and insomnia, which could be connected to depression.