Researchers have found no correlation between how long a person sleeps and the regularity of their sleep. Regular and irregular sleepers were found to have similar sleep durations.

California Polytechnic State University, San Luis Obispo

Sleep regularity refers to whether a person sleeps and wakes at a consistent time. 

Sleep Regularity

Phillips, A. J. K., Clerx, W. M., O’Brien, C. S. et al. Irregular sleep/wake patterns are associated with poorer academic performance and delayed circadian and sleep/wake timing. Sci Rep 7, 3216 (2017). https://doi.org/10.1038/s41598-017-03171-4

Irregular sleep/wake patterns are associated with poorer academic performance and delayed circadian and sleep/wake timing

Regular sleep means going to bed and waking up at about the same times every day, including weekends, so the biological clock stays in sync and the body develops a nightly sleep habit.

Regular Sleep

Someone with irregular sleep would sleep and wake at random times.

Irregular Sleep

Sleep Regularity and Sleep Duration

Sleep regularity is positively correlated with academic performance. Participants with regular sleep tended to have higher GPAs than participants with irregular sleep. 

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