What Exactly is Circadian Rhythm

Just for the sake of clarity circadian rhythm is any mental, physical or behavioral rhythm or pattern that our bodies fall into. Today we’re going to talk specifically about the most commonly known, light related rhythm. The sleep and wake cycles.
Ever wonder how it’s possible that some nights you feel exhausted but can’t go to sleep? Chances are the rest of your body and brain didn’t get the memo to start prepping for bed. Your sleep circadian rhythm is directly affected by the amount of light taken in throughout the day in order to send the signal to the brain that it’s time to sleep. And you might be wondering why this is important because, though your brain & body might not know it’s time for bed, you always do. Unfortunately that’s not enough for quality sleep. You see as soon as your brain receives the message from the nerves in your eyes that it’s time for sleep it starts to produce melatonin. You may recognize melatonin as the hormone that’s responsible for inducing drowsiness to help you fall asleep & stay asleep. If the brain never gets that message and doesn’t begin producing melatonin you’re left tossing and turning trying to chase after a good night’s sleep

How Can Blue Light Affect Sleep

Blue light has a different wavelength than natural light and is noticeably brighter. During the day (putting aside the strain on your eyes) it’s helpful because it helps to boost attention and focus. These uncommon wavelengths further suppress the production of melatonin ensuring that you stay awake and alert throughout the day. Yes, of course there are exceptions, even blue light can’t combat physical fatigue to get you through the midday slump.

Now consider that for a moment, and imagine what the compounded affect of taking in that type of light all day might be on the brain. We all know that going from wide awake to asleep isn’t as easy as flipping a switch. As you might imagine, that means your brain needs some time to wind down, to process the change in surroundings and send the signals necessary to get ready for bed.

So then what happens if your day looks like this:
6:00am – Wake up, check emails facebook, instagram etc.
7:00am – Have your coffee and/or breakfast and scroll through your phone to pass the time,
8:00am – Drive to work
9:00am – sit down at your desk, turn on your computer & get to work
12:00pm – have lunch, scroll through your phone to disconnect until your break ends
1:00pm-5:00pm – back at your desk
6:00pm – get home, have dinner
7:00pm-10:00pm – watch TV, scroll through your phone, check emails etc.

When did your brain get the signal to start shutting things down? Now sure as I said physical fatigue can of course beat the mental fatigue to some degree and maybe get you to fall asleep. But that does not equate to a restful night. Instead you’re tossing and turning all night, maybe even drifting in & out of sleep or waking up throughout the night. You end up waking up feeling exhausted, but you pour your coffee and drag yourself through that cycle again.

Now some people are probably skeptical because you feel “fine”, but what if you’ve just adapted to this perpetual fatigue so much that you just don’t notice anymore. That may sound like you’re in the clear, but imagine if there’s a chance you could suddenly get even more energy. How much more productive could you be? How much better would you feel? Could you find more time to do the things you want to do throughout the week? I think the chance at that extra energy & ultimately extra time is worth trying!

5 Tips to Sleep Better Tonight

Here’s a few strategies you can start implementing now to sleep better tonight! First a few words of advice. As with any new habit, take small steps and do things one at a time. So don’t try to knock out everything on this list today, pick the easiest one and start there. On that same note, don’t push yourself too hard, if your goal is to go to bed at 10 and right now you’re going to bed at midnight just aim for 11:30pm or maybe even 11:45pm. And then in a few days aim to go to bed 15-30mins earlier again. Repeat this process until you reach your goal bedtime. This is particularly important if you live with other people who would also be affected by a change in your schedule.

And the last thing to point out is, this is not a quick fix. Going to bed 15mins earlier tonight or cutting out blue light earlier isn’t not going to equate to waking up with a sudden burst of energy tomorrow. Like any change that lasts, it takes time and consistency to see the change.
Ok now let’s get to it.

  1. Establish a Bedtime Routine: Again we don’t want to force anything here. So don’t pick things what you think you should do but really don’t want to do. The idea here is to eventually start looking forward to the process of getting ready for bed. So pick a couple activities that you will look forward to and that will relax you, so nothing mentally or physically challenging. That mean no studying or exercising before bed. Stretching however is a great option.

    I always encourage my clients to incorporate 1 physically relaxing activity (taking a bath, stretching, doing a skincare routine, etc) and 1 mentally relaxing activity (reading a fiction book, meditating, deep breathing practice, etc)
  2. Avoid the screens: Incorporating a bedtime routine will certainly help by building in some screen free time before bed But just to run home this point, avoiding screens means all screens. So avoid watching TV, looking at your phone or turning on your computer in the last 30mins (ideally 1hr) before bed. That doesn’t mean you can’t watch your favorite show when you get home anymore or play Fortnite or Apex with your friends after work anymore. It just means maybe 1 less episode or 1 less game each night.

    If you have children maybe encourage more active play time with them when you get home rather than watching cartoons. Fun for the whole family, see!
  3. Starting filtering your light exposure early: Most phones have the option to turn on blue light filters now. Being someone that currently works from home and from my phone/computer I keep my blue light filter all the way up on my phone at all times.

    To deal with the light from my computer that I spend a lot of time staring at I got the blue light filtering glasses you see here a couple months ago. I don’t actually wear glasses or contacts but fortunately they sells non-prescription options as well!
What is Blue Light, Circadian Rhythm, What is Circadian Rhythm, Sleep Hygiene, Sleep Quality

Online Personal Trainer
Cassie Therrien | Certified PT Nutrition & Life Coach

“Strength doesn’t come from what you can do. It comes from overcoming the things you once thought you couldn’t.” – Rikki Rogers

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