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.
How long does it take for caffeine to make an effect on the body? I've heard that if you drink coffee it takes about seven hours for caffeine to really take effect.That's why it's not recommended after 2 P.M., because it can affect your sleep. And if you are sleepy, a cup of coffee will not help.ow long does it take for caffeine to make an effect on the body? I've heard that if you drink coffee it takes about seven hours for caffeine to really take effect.