I have had some questions about coffee/caffeine pre-workout. Here are a few sources for you to help make an informed decision.
You might think that the DNA you inherited is one thing that you absolutely can't do anything about, but in one sense you'd be wrong. Researchers reporting in the March issue of Cell Metabolism, a Cell here for full article.
Caffeine does stimulate the central nervous system, increasing energy production and mental focus and acuity. It reduces reaction time to physical and visual stimuli, increases the heart and respiratory rates, and may decrease symptoms of depression. Click here for full article.
During this double blind, placebo test, the athletes were given pills an hour before the exercise trial. The results were that those who received caffeine before the exercise performed more efficiently than those who received the placebo. (Graham, 1998) This shows the importance of caffeine in endurance sports such as cycling, running, and soccer which require a great deal of physical stamina in order to compete successfully. Click here for full article.
Post workout may be a different story. Despite what this (small) study found, caffeine after a work out may slow creatine uptake, and increase cortisol, which signals your body to store fat.