If you’re going to write something important, it’s best to do it in the afternoon, according to a recent survey from Grammarly, an extension for web browsers and Microsoft Office that corrects spelling and grammar mistakes. For its blog, the company analyzed a billion words its service corrected to determine how time of day affects spelling and grammar mistakes on the web. 

Grammarly found that, on average, early risers writing between 4 a.m. and 8 a.m. made 11.8 mistakes per 100 words written, while those writing between 10 p.m. and 2 a.m. made 14.3 mistakes for every 100 words.

People seem to write best in the middle of the day, proving that you really shouldn’t be sending work emails at 4 a.m. According to the data, writers made the fewest mistakes (3.7 for every 100 words) during the afternoon, from 1 p.m. to 5 p.m. So save those important emails for after lunch.

You can see more of Grammarly's findings in the infographic below. And if you don't know whether you're a morning person or a late-night person, a 45-second quiz will tell you your chronotype.

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