When HHMI Investigator Amita Sehgal started studying sleep 25 years ago, the topic elicited a yawn from most biologists. "In the year 2000, if I had suggested to my department that we hire people ...
If you still feel tired after getting eight hours of sleep, something may be precluding you from feeling well-rested. Certain medical conditions, mental health conditions, or vitamin deficiencies ...