Melatonin is involved in the regulation of the sleep-wake cycle, circadian rhythms, and seasonal changes in the light dark cycle. Commonly used to induce sleep, some (but not all) find it to reduce jet lag. There is a high concentration of melatonin in the pineal gland, where it is manufactured. I was surprised to learn that there are significant amounts of melatonin present in the gastrointestinal tract.
In 2014 the average dual fuel reached an eye watering Â£1,344. The average electricity bill was Â£592 and the average gas bill was Â£752. But averages can be confusing. So to give you a better idea of how your own bill compares weâve estimated the total bill for small, medium and large users in the chart above.
According to the BBC, if you pay for gas and electricity separately then the average gas bill is around Â£740 per year, which means the average gas bill per month is around Â£61. Again it depends on how many people live in your house and so on, but you can use this as a reasonable average for a family of 3-4.he average water bill for a year is Â£379 if you're not metered (rateable value) and Â£325 if you are metered, according to Ofwat. This means if you're on a rateable value bill, the average water bill per month is around Â£31.50. If you're on a meter, the average water bill per month is around Â£27.