1The sleepless nights she endured during the exam period took a toll on her physical health.
2Is there a correlation between sleepless nights and decreased productivity in the workplace?
3The sleepless city, with its vibrant nightlife, was a magnet for tourists and partygoers alike.
4Try relaxation techniques to help you cope with sleepless nights caused by anxiety or stress.
5Researchers found that sleepless nights can impair cognitive function and lead to poor decision-making.