A dotFIT answered. The half-life, which is the time required by the body to metabolize or inactivate 1/2 of a substance activity, for caffeine (doses lower than 4.50mg/lb) ranges from 2.5 to 10hrs. Meaning, caffeine has little to no pharmacological effect after this time but may still be present in small amounts in the body.
Brewster (CDP), Massachusetts. Brewster is a census-designated place (CDP) in the town of Brewster in Barnstable County, Massachusetts, United States. The population was 2,000 at the 2010 census, out of 9,820 in the town of Brewster as a whole. Geography
Brewster's first schoolhouse, near the town of Brewster, laid out by George Washington Brewster, a wealthy newspaper publisher and descendent of Elder William Brewster of Mayflower fame. Brewster school is District 5 school of Blaine County. A scene of Brewster in 1908.