Structure of Haemoglobin: Haemoglobin is an aggregation of four globular proteins (typically two alpha and two beta subunits), each with an embedded haeme group. Each haeme group allows the binding of an oxygen molecule.
Here's another intriguing case from the Guinness World Records. In 1964, a 17-year-old high school student named Randy Gardner beat the world record for sleep deprivation by staying awake for 264 hours (11 days) without using any stimulants.
How long can you stay awake? The longest well-documented period without sleep that I have ever heard of is 264 hours and 12 minutesâ¦about 11 days[1]. The 17 year old Randy Gardner broke the previous record of 260 hours for his high school science fair project. This was in 1965 and I havenât read or heard of anything like it since.