

He explained that caffeine can disturb a night of sleep in intricate ways. We asked Olav Spigset, a researcher and professor at the Norwegian University of Science and Technology’s (NTNU)’s Department of Laboratory Medicine, Children’s and Women’s Health. But does caffeine decompose in the body at different rates, making this stimulant last longer in some than others? There are big differences in how alert we become from caffeine, as our tolerances for the drug are individual. Others say they spin like a top on the mattress if any less than half a day as passed since their last latte.

Some seem to be able to drink cup after cup, even right before going to bed, with no problems. Many Norwegians wouldn’t think of letting a day pass without getting their jolt of java. Norwegians are said to be second only to Finns in world coffee consumption per capita.
