Late night study sessions may seem like a good idea to students looking to boost their grades, but new research suggests sticking with a consistent sleep schedule may be a better long-term strategy.

The study, published earlier this month by Scientific Reports, found that college students who did not go to bed and wake up at similar times each day were more likely to have lower GPAs.

Irregular sleep patterns upend students’ natural body clocks and can leave them feeling jet-lagged, a condition that ultimately undermines their performance in the classroom, Dr. Charles Czeisler, one of the study’s authors, told CNN.

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