Beware the late-night tweeting.

However amusing the typos, staying up to share 140 character quips can throw you off your game the next day—whether that’s going to your 9-to-5, playing on an NBA team, or, you know, running the free world.

According to preliminary data from a study of 112 professional basketball players and 30,000 of their tweets, nocturnal Twitter usage linked to poor performance in next-day games. After tweeting between 11pm and 7am, players scored on average one fewer point and saw a 1.7-percent drop in their shooting accuracy than they did in games that did not follow late-night or early-morning tweeting. The Twitter-fatigued players also saw their playing time drop by two minutes.