It seems to be the general rule of thumb that we should be awake for 16 to 18 hours per day and sleep anywhere from between 7 to 9 hours in order to function properly. In the busy world that we live in today roughly half of us Brits are only getting a rather worrying 6 hours of sleep or less, and 4 out of 5 of us are suffering from ‘toxic sleep’ – sleep that is disturbed or leaves you feeling tired the…