Have you ever woken from sleep feeling like you’ve been hit by a bus?!
It’s a strange phenomenon that exists around the very act that is supposed to revitalise us, when simply going to sleep is not enough to cure tiredness – and may in fact leave us feeling worse.
Climbing into bed at 11pm and rolling out at 6am is rarely successful in achieving the optimum balance of sleep quantity and quality. (more…)
Melatonin is a naturally occurring hormone secreted from the Pineal gland in the brain. It’s production is triggered by factors within and outside of the body, and it’s primary function is to prepare the body for good quality sleep.
Internally, production and secretion of melatonin is linked with circadian rhythms, the underlying processes that drive sleepiness and wakefulness. External factors, however, have the capacity to influence melatonin production and it’s association with the internal body clock. (more…)
Off the coast of Croatia exist two Islets name Pod Kopiste and Pod Mrcaru. In 1971 a group of researchers transported 5 pairs of Podarcic sicula lizards from Pod Kopiste to Pod Mrcaru where at the time, the species did not populate. Some 35 years later, a second group of researchers travelled to Pod Mrcaru to investigate what had transpired with the lizards over that relatively brief time. They found that the lizard species that had been transported there from Pod Kopiste were flourishing, however marked adaptations had occurred in the Pod Mrcaru lizards.
Their skulls had become longer, wider and taller and changes were also seen in their digestive system, to facilitate the digestion of the more vegetarian diet compared to their ancestors on Pod Kopiste who still subsided almost completely on a diet of insects. Remarkable, obvious divergence had occurred in only half a human lifetime (1).
We humans are also susceptible to adapting to our environment- perhaps not as obviously from generation to generation as those little Croatian lizards but if observed closely with a trained eye it is easy to observe an individual adapting to a change in environment. (more…)