Recently, I wrote about the issues surrounding fitness during extreme weather and the effects of high heat on blood sugars. I’m going to reiterate by saying that during the summer season, blood sugars can be adversely affected by high temperatures. It can be different for some people, but in my case, my blood will often drop.
This can be caused by the body straining to lower your core body temperature through sweating and an increased heart rate due to the heat. This is why it’s SO important to consistently sip water throughout the day. It helps to keep you hydrated and aids in regulating your core body temperature to avoid issues like heat stroke and dehydration.
But before I start repeating everything I posted on a previous day, let’s address the culprit of all these issues: the Sun!
Now before I get into the crux of this post, I’ll take a moment to explain exactly what our Sun is. It is a star. It creates heat by fusing hydrogen into helium and this process is the reason behind the Sun’s light and heat. This energy travels to the Earth where it is responsible for most of the life on our planet. (Although explaining this shouldn’t be necessary, we live in a world where some people actually believe our world is flat, sooooo… you do the math!)
Ultraviolet light, or UV rays, are present in the Sun’s radiation and prolonged exposure to this radiation can be damaging to living tissue. This is where the application of sunblock or sunscreen lotion plays an important role.
Last week, I decided to be a smart ass and cycle for 21 kilometres. The temperatures that afternoon reached the high 20’s, low 30’s (that’s in Celsius) and I took off from home thinking if I got too hot, I’d simply turn around. By the time I started to feel the effects of the heat, I had already gone about 10 kilometres and would have to peddle another 10 to get home!
I drank plenty of water and stayed hydrated but as it is the beginning of the hotter season, I totally neglected to apply sunblock before taking off on my trek. Needless to say I got a nice red-skinned surprise later in the day.
Let’s talk about sunblock for a moment. Sunblock is a topical gel or lotion that’s applied to the skin. It helps by reflecting UV rays away from the skin, which prevents damage and sunburns.
What many people don’t know or understand (and what I only learned a couple of years back as well) is what the SPF number on your sunblock refers to. SPF stands for Sun Protection Factor and the number is a multiplier. So what that means is that if it takes you 10 minutes to start burning and you apply an SPF15 sunblock, you can theoretically be in the sunlight for 150 minutes before you start burning. Theoretically.
You should be applying sunscreen daily, or even any time you step out into the sunlight. According to an article posted by Men’s Health Magazine, the Centre for Disease Control recommends using AT LEAST an SPF15 or higher. To be honest, I don’t recall ever seeing anything lower. Most retail locations in Canada will carry SPF 15, 30 and 50. When I travelled to Japan, they had an SPF110 available, although I can’t speak to whether it was more effective than the 50 or not.
An important factor to consider is to ensure that you apply sunblock properly. Most people tend to dab here and there and assume they’re good to go. But you need to consider full coverage of your bare skin in order for the sunblock to be truly effective. Remember that you may need to reapply more frequently if you are swimming or sweating profusely.
Here’s that Men’s Health article if you want a bit more information: https://www.menshealth.com/health/a19541357/how-much-sunscreen-do-you-need/
Sunblock is important to help with the prevention of certain types of skin cancer and can help you enjoy the hotter season without the perils of getting sunburned. Apply sunblock often, drink plenty of fluids (bearing in mind that caffeinated and alcoholic beverages will contribute to dehydration) and take added precautions by wearing some sun-blocking clothing. Remember, don’t get burned! ☯