Head to Settings and tap on the More tab at the end of the Wireless & networks tab. Step #1. image. Once inside, swipe to the bottom and hit the Emergency broadcasts button.
I have also heard that drinking peppermint tea (herbal) is good.The time it takes for the body to eliminate one half of a caffeine dose is normally between 3 to 12 hours. It is called the half-life of caffeine. Source(s): http://www.coffeefaq.com/site/node/127. seashells Â· 7 years ago. Thumbs up.
Withdrawal symptoms can onset within 12 to 24 hours of caffeine consumption and last between 2 and 9 days. There are more cognitive concerns here as well. For one, caffeine probably follows the Yerkes-Dodson law, in which a moderate dose is superior to too little or too much.