Two female reproductive hormones (follicle stimulating and luteinizing) are released during sleep.
The extra-hour of sleep received when clocks are put back at the start of daylight in Canada has been found to coincide with a fall in the number of road accidents.
The rate at which our kidneys filter waste slows down while we’re sleeping. This reduction in renal production is why that first morning urine is so concentrated.
Find yourself waking up just before your alarm goes off – this could be due to Adrenocorticotropin – a stress hormone responsible for waking some people up just before their alarms go off