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.
Thread: How long can a person stay awake before they go mad? How long can a person stay awake before they go mad? 08-04-2010 22:16 I am interested to know because I often pull all-nighters on speed, sometimes staying awake for up to four nights. After the second night awake I start feeling dizzy when I stand up and after three nights im often hallucinating.