Research conducted by Strava using over 800 million user-logged activities in 2019 predicts the day most people are likely to give up on their New Year's Resolution is January 19. (Strava calls it "Quitter's Day.")
To pinpoint this date, Strava analysed data from 98.3 million uploaded exercise activities.
https://www.inc.com/jeff-haden/a-study- ... stick.html