how long does caffeine last - Health Topics
A cup of coffee can be the perfect pick-me-up, giving you a quick boost of energy on a slow afternoon. But how long does caffeine stay in your system and can it affect you even hours after consumption ... Yahoo: Is your afternoon pick-me-up behind your bad sleep?
Understanding the Context
Experts reveal how long caffeine lasts in your body Is your afternoon pick-me-up behind your bad sleep? Experts reveal how long caffeine lasts in your body Health.com: How Long Does Caffeine Stay in Your System After a Cup of Coffee? How Long Does Caffeine Stay in Your System After a Cup of Coffee? MSN: Experts reveal how long caffeine stays in your body — and it might be the reason you can't sleep Experts reveal how long caffeine stays in your body — and it might be the reason you can't sleep