Keeping Hydrated

Cycling back home last Sunday my thoughts turned to why I felt comfortable when the temperature was nearly 30 deg C. The blue sky beamed above, no, not too many puffy, white clouds up there and the bitumen was a nice shiny black below yet the heat wasn't overwhelming. Then I felt the breeze! What contributes to the wind chill factor to bring on hypothermia can also make a hot day pleasant.

Being an incurable wordaholic I mused about the difference between the terms "ambient temperature" and "apparent temperature". I confess to a life-long interest the science of weather. This addiction began when I did a course in climatology. I will leave it to the Bureau of Meteorology(BOM) to explain all to you. Suffice it to say that the apparent temperature is calculated from the ambient temperature, with humidity and wind taken into account to give you, dear reader, a real idea of the physical comfort/discomfort you might experience in the outdoors should you wish to venture out.

I stopped pedalling, stunned that I could remember this from eons past, and took a drink of water. Oh, another controversy, how much water to imbibe? Well, Sports Medicine Australia comes to the rescue here. In summary, here it is:

"Carry copious supplies of water. Drink around 500 ml before starting your activity, then 200-300 ml every 15 minutes. After completing your activity, drink another 500mL!.

In hot conditions, exercise should be reduced in duration and intensity, or postponed to a more suitable (cooler) time. Alcohol and caffeinated drinks such as tea and coffee increase fluid loss, thus promoting dehydration. They are best avoided before, during and after exercising, until fluid losses have been completely replaced."

Oh, NO ooooooo, no more coffee for me! For those of you who know me, it's ALL ABOUT THE COFFEE!

Then, I started to think about the heat combined with the humidity that we all seem to complain about. (Well, some of us, okay, maybe just one of us ... ). Unfortunately, for this we need to consider WBGT (wot?). Having followed the link, you will know that this is the Wet Bulb Global Temperature, and that it is very useful for athletes training in heat and humidity to work out what the heck to do. If you are a training buff you may like to read the information about this for coaches by Sports Medicine Australia or this similar information from SMA's South Australian branch.

I'm now so confused that if it's hot, I'll just stay indoors! However, if you would like the information about the current weather in Coffs Harbour then you can decide!

Carolyn