Weekend Catch-Up Sleep may have Beneficial metabolic effects with Limits, finds study

A new study published in the BMJ Open Diabetes Research & Care found that 1-2 hours of weekend catch-up sleep may help compensate for weekday sleep deprivation, but excessive catch-up sleep could lead to adverse metabolic effects.

Data from the National Health and Nutrition Examination Survey between 2009 to 2023 was used. Over 23,000 adults were examined to better understand how weekday sleep duration affects insulin resistance. To measure this, the study used the estimated glucose disposal rate (eGDR), which indicates how efficiently the body processes glucose.

The findings revealed that sleep duration and metabolic health follow an inverted U-shaped curve, where both too little and too much sleep may be linked to poorer outcomes. Approximately 7.3 hours of sleep per night during the workweek was considered optimal.

Below this threshold, every additional hour of sleep was associated with improved glucose regulation, which suggested that people who are sleep-deprived during the week can benefit metabolically from getting more rest. However, once sleep exceeded about 7.3 hours, the trend reversed. Longer sleep durations were linked to reduced eGDR, which indicated worsening insulin sensitivity.

The study also explored whether weekend catch-up sleep (WCS) to compensate for weekday deficits could offset the effects of insufficient rest and the results show that moderation is key.

For individuals who slept less than the optimal amount during the week, adding one to two extra hours of sleep on weekends was associated with improved metabolic markers. This suggests that limited catch-up sleep can help restore some balance for those carrying a sleep deficit.

The participants who logged more than two additional hours of weekend sleep showed a negative interaction with weekday sleep duration, which may actually undermine metabolic health. For individuals already getting sufficient weekday sleep, additional weekend rest appeared to offer no benefit, and could be harmful as well.

This research illuminated that these findings challenge the common assumption that extra sleep is universally beneficial. Overall, this points to the importance of consistent and balanced sleep patterns tailored to individual needs.

Source:

Fan, Z., Wei, R., Chen, T., Yan, X., Yin, S., Cao, Y., Akinyemi, L. I., Zhong, J., Shi, H., & Zhang, F. (2026). Association of weekday sleep duration and estimated glucose disposal rate: the role of weekend catch-up sleep. BMJ open diabetes research & care, 14(2), e005692. https://doi.org/10.1136/bmjdrc-2025-005692