Honestly you nesh pair, I've just spent 4 hours outside. Then my wife relented and unlocked the door!
Seriously I am with you, I spend no more than an hour at a time in my garage and even then I have on a hat and warm fleece, as well as trousers etc obviously.
I expect once the weather picks up you will also pick up the pace Ian so just enjoy the warmth inside until the right day comes along.
Ian