Don't Smoke

A colleague in my office used to be a chronic smoker until he was diagnosed with some lung damage and heart problems some time ago. He now carries with him a digit finger pulse oximeter to quickly and accurately check his blood oxygen levels and pulse rate at anytime of the day. It’s quite sad sometimes watching how diligently he has to monitor his health as any drop in his blood oxygen levels could mean there is a problem with his lungs. I guess people don’t realise the perils of smoking until it’s too late.