
Einstein 10 hrs plus naps
Churchill 1-2 hr naps
Federer 10–12 hrsEdison disparaged sleep, irritable and mood swings
Tesla 2-4 hrs, had cognitive decline
Thatcher 4–5 hrs, had cognitive decline

Einstein 10 hrs plus naps
Churchill 1-2 hr naps
Federer 10–12 hrsEdison disparaged sleep, irritable and mood swings
Tesla 2-4 hrs, had cognitive decline
Thatcher 4–5 hrs, had cognitive decline