The-half-life-of-caffine-is-six-hours-meaning-that-six-hours-after-you-drink-a-cup-of-coffee-half-of-the-caffeine-from-that-cup-is-still-in-your-system

The-half-life-of-caffine-is-six-hours-meaning-that-six-hours-after-you-drink-a-cup-of-coffee-half-of-the-caffeine-from-that-cup-is-still-in-your-system