Health gadgets..

Bought one of these little gadgets the other day (£15), its called a "Pulse Oximeter" a device that measures (+/- 2%) the saturation level of Oxygen in your blood stream. It works by shining an infrared light through your finger and measuring the amount of IR radiation absorbed by the blood flowing through, it also measures your pulse. It's not a perfect device and there are certain conditions that cause it to give inaccurate readings but for a rough measure of O2 health it's not bad. There have been a few articles in the press recently about this kind of measurement and Covid-19, it would seem that it can provide a useful early warning for situations where someone has the disease and appears well, but, their O2 levels are running dangerously low! Hopefully I won't have to use it for that purpose but in any case I've always found it interesting to monitor various health measures. It's a useful way of (sometimes) getting an early indicator that something is wrong. Both my kids measured 99% with resting pulses in the 50's, both my Wife and I (in our 50's) scored 96-97 with resting pulses between 75 and 80, so overall we seem to be in rude health as far as these measures go, hopefully we'll remain that way..!