Why people can not sleep well even in AC rooms during heatwave?

According to Dr Avi Kumar from Fortis Hospital in Okhla, several people are struggling to sleep at night even in AC rooms amid the heatwave. He explained that for healthy sleep, there has to be a slight reduction in core body temperature. However, due to prolonged exposure to rising temperatures in the day, thermoregulation is affected, leading to non-restorative sleep.