|                                                                                                                                                                                                                                |                                                                                                                                                                                                From                                                                       Heather Watkins, your About.com Health Editor  	                                                                                                                                                                                                                                                             I've tried cutting back on my caffeine intake. I'm down to one diet Coke's worth of caffeine at lunch, but trying to cut that out is difficult. Dang you, withdrawal headaches!                                                                        |                                                                                              |                                                                                                                                                                               Caffeine's Effects on Your Brain                                                                                                                           When you start your day off with a cup of java or guzzle a soda at lunch, you might feel as though you're more alert and able to get through the day. But what's actually happening chemically in your brain when it's hit with a jolt of caffeine?                                                                                                                         |                                                                                                                                                The Safe Amount of Caffeine                                                                                                                           Caffeine seems innocuous, but it's not completely harmless. Ever felt jittery after too many Starbucks trips one day?                                                                                                                         |                                                                                                                                                Can Caffeine Help You Get Through a Workout?                                                                                                                           If caffeine can help you stay alert at the office, it only makes sense that it would also help you power through a workout, right? Find out whether taking caffeine before hitting the gym is helpful or harmful.                                                                                                                         |                                                                                                                                                Caffeine and Fertility                                                                                                                           Many women trying to get pregnant wonder whether their caffeine intake is affecting their fertility. But the research isn't very clear.                                                                                                                         |                                                                            |                                                                                                                                                             |                                                                                                                                               |                                                                                         Health Ads                                          |                              |                              |                              |                                                                                            Featured Articles                                                                                          |                                                                            |                                                                                                                                          |   |                                                                                                                                               |                                                                                                                              More from About.com                                                                                            |                              |                              |                              |                              |                                                                                   |                                                                                           Bake Sale Bestsellers                                                                                             Make your next bake sale a profitable one with these irresistible recipes. 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