Study: caffeine fix is all in your head

September 2, 2011 9:36:25 AM PDT
Researchers in Britain found the jolt you get from coffee may be all in your head. Study participants were given coffee they thought had caffeine, but, it was actually decaf.

Despite that, researchers say they still noticed improvement in people's performance and mood and some did even better on mental tests than those who drank caffeinated coffee. The study is published in the journal Appetite.