So now i need to remember; if my muscles ache like this for no apparent reason (ie; i didn't recently run a marathon) then my blood ox is probably pretty low. Its an indication the oxygen transfer between blood and muscles isn't working properly; backing up; it means my lungs aren't making enough blood oxygen TO transfer to the muscles.
I really want one of those little machines that you can read your blood ox with. That thing is totally cool. And a very good tool for someone like me. Better than the damn peek flow.
Have I mentioned how tired I am? I'm having an (i thought) small asthma attack, walked to physio, did physio, did the shopping AND walked back. Yeah, I'm tired.