He'd made his own cup with extra caffeine to help shake off such an early start to the day.
While the colas do contain some caffeine , they are not equal to the real stuff.
She pointed out that I had a habit of not eating at all on race day and drinking a lot of caffeine .
A tea or coffee plant can probably grow perfectly well without caffeine .
Also, try to avoid drinking too much tea and coffee as caffeine can increase anxiety levels.
A good dose of caffeine stimulated just the right amount of thought, he figured.
They have a similar effect to tea or coffee, since they contain the same alkaloid, caffeine .
The second major effect of caffeine is its increase of dopamine levels in the body.
Eliminate or restrict severely the intake of stimulants such as caffeine or alcohol.
Limit the amount of caffeine you consume to no more than two cups of coffee per day.