Day #5: The power of sleep and why it matters
I am bit behind in the challenge, and that might be due to the fact, that my sleep is lacking. And that leads to reduced energy. But let me start from the beginning. Sleep is important, everyone knows that. But why? And how do we get the best sleep possible? Well, I could write a book about this. Or you might want to read a book from a specialist, e.g. Norman Walker: "Why we sleep". Ok, that's it, no need for me to go into more detail! 😉 Well, but I want to pick out something that migth be interesting for you. The connection between sunlight, serotonine, melatonine, and why night owls might want to change their schedule (at least a bit): Humans have evolved with the rhythm of the sun and our brains have even synchronized the production of certain chemicals with the light. In the morning, when we get bright, full spectrum sunlight, the brain produces serontonie. That is important to get into a good mood, be awake and energetic. (I simplify, but that should be just a short post) In the evening, the sunlight shifts to red wavelenght, as the blue wavelenghts will be filtered out by the atmosphere. That is a signal to the brain, to stop producing serotonine and instead produce melatonine. Now, some very important things about this, most people don't know: 1. Melatonine is produced from serotonine. I repeat that: we need to have good amounts of serotonine in our brain, to be able to produce good amounts of melotine! No sunlight during the day, no melatonine at night! 2. Blue spectrum light blocks the production of melatonine, as the brain is still in daylight/awake mode. Full spectrum light contains blue wavelengths, so it also blocks the production 3. Melatonine makes you tired and helps you fall asleep. It is not a sleep drug to keep you asleep. That's why it is so helpful when you are jetlagged, but not a good option when you have other things going on that disturb your sleep. Taking too much melatonine can lead to drowsiness in the morning, as the amount of melatonine in the brain gets reduced over night, but if the initial dose is too high, you still have it in the brain the next morning.