India, Oct. 22 -- Dr Divya Gopal, additional director at Sir H.N. Reliance Foundation Hospital, said in an interview with HT Lifestyle that waking up at different times every day can disrupt the body’s internal clock even if a person goes to sleep at the same time each night. The comments were published in an HT Lifestyle article by Anukriti Srivastava on Oct. 9, 2026.
Circadian rhythm and conflicting signals
Dr Divya said the body operates according to an internal 24-hour circadian rhythm that regulates processes including sleep, hormone release, body temperature, metabolism, and alertness.
She said that when wake-up times fluctuate greatly—such as waking at 6 am on weekdays and 9-10 am on weekends—the brain receives conflicting signals...