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
Hopkinton is a town in Merrimack County, New Hampshire, United States. The population was 5,589 at the 2010 census. The town has three distinct communities: Hopkinton village, mainly a residential area in the center of the town; Contoocook, the town's business hub, located in the north; and West Hopkinton, within the more agricultural portion of the town.