
Sadhguru told actor Alia Bhatt that he previously slept 2.5-3 hours daily for 27-28 years. After two emergency brain surgeries two years ago, sedatives changed his habits. He now sleeps 4-4.5 hours. A neurologist states most adults need 7-9 hours for optimal function. Chronic sleep restriction can harm memory, mood, and immunity despite feeling manageable.