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.
Try to stay awake. Challenge yourself to stay awake â your mind will rebel! Itâs called the sleep paradox, says psychotherapist Julie Hirst (worklifebalancecentre.org). She explains: âKeep your eyes wide open, repeat to yourself âI will not sleepâ.