More than half of sleep sessions end with the snooze button, with people sneaking in an extra 11 minutes on average, a new study reveals — but experts say it may not be a good idea.

Researchers from Mass General Brigham analyzed data from the Sleep Cycle app, which included sleep habits from more than 21,000 people globally.

Among the more than three million sleep sessions tracked, nearly 56% ended with the snooze button.

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The heaviest users of the snooze button — who used it for more than 80% of the mornings included in the study — slept an average of 20 extra minutes.

These heaviest snoozers were also shown to have "more erratic sleep schedules" than those who used the snooze button less often, the researchers found."Unfortunately, the snooze alarm disrupts some of the most important stages of sleep," said lead author Rebecca Robbins, PhD, in the Division of Sleep and Circadian Disorders Medicine at Brigham and Women’s Hospital, in a press release.

"The hours just before waking are rich in rapid eye movement sleep. Hitting the snooze alarm will interrupt these critical stages of sleep and typically only offer light sleep in between snooze alarms."