Air tightness vs ventilation - I’m confused

[Flyfisher]

We may be at crossed-purposes. I mentioned the cold-showers-being-good-for-you thing as an example of the apparent benefits of a brief cold shock. However, it's not one I'm tempted to try and my showers are always refreshingly hot. It's the getting out into a cold (well, cool) bathroom for some brief shivering that I was referring to. But yes, I suppose there's always some pleasure to be had when moving from something uncomfortable to something comfortable, though I'm not convinced that it necessarily involves SadoMasochism

 

[a twig]

For the more distinguished gentleman a draughty period property can also be the perfect excuse for the purchase of a luxuriously long and thick velvet smoking jacket

 

[Cubist]

For the more distinguished gentleman a draughty period property can also be the perfect excuse for the purchase of a luxuriously long and thick velvet smoking jacket

Substitute ratty old dressing gown for the smoking jacket and you have me.