(1) While the colas do contain some caffeine , they are not equal to the real stuff.

(2) She pointed out that I had a habit of not eating at all on race day and drinking a lot of caffeine .

(3) It has the same chemical composition as caffeine , and the same physiological action.

(4) Also, try to avoid drinking too much tea and coffee as caffeine can increase anxiety levels.

(5) If you like caffeine , you can include two or three tea bags of either black or green tea.

(6) Decaffenation is the process of removing caffeine from products that contain it.

(7) If nothing else, the unexpected jolt of caffeine will get you through the rest of the day.

(8) The caffeine in the coffee brought a welcome kick to wake us up after our super-stodgy lunch.

(9) The second major effect of caffeine is its increase of dopamine levels in the body.

(10) A tea or coffee plant can probably grow perfectly well without caffeine .

(11) The stimulant effects of caffeine in coffee are well known to help improve energy and alertness.

(12) It could take all day and part of the night for the body to rid its systems of caffeine .

(13) They have a similar effect to tea or coffee, since they contain the same alkaloid, caffeine .

(14) From what I hear it's basically a stimulant similar to caffeine but without the crash at the end.

(15) Eliminate or restrict severely the intake of stimulants such as caffeine or alcohol.

(16) He'd made his own cup with extra caffeine to help shake off such an early start to the day.

(17) Copious quantities of caffeine and alcohol will stimulate the production of urine, so keep them to a minimum.

(18) In flowering plant pollen tubes, caffeine disrupts vesicle zonation at the tip and stops elongation.

(19) Limit the amount of caffeine you consume to no more than two cups of coffee per day.

(20) A good dose of caffeine stimulated just the right amount of thought, he figured.