TIL that individuals are as much as 25 mm taller in the morning than in the evening, as a result of compressive forces bearing down all day User keraneuology, in the Today I Learned (TIL) subreddit, 14 Dec 2013
TIL you can be as much as 25mm taller in the morning than at night due to spinal compression. User SaggyBallsHD, in the Today I Learned (TIL) subreddit, 22 Feb 2013