Originally Posted by voxsartoria
I don't wear undershirts.
I try to keep sufficiently fit so that a simple walk in warm weather is not a life and death struggle with nature.
This summer in Washington, DC it has been a life and death struggle and being fit has nothing to do with it. It's been 90F and hotter more days than in recorded history. Many days have touched 100F and as most know, DC is built on a swamp. The humidity is absurd. Heat indexes easily cross 100F anytime the temperature reaches 92.
I play judo twice a week, which is very strenuous both aerobically and anaerobically. However, when I step off the metro (train) and walk 12 minutes to work, regardless of whether I am wearing a suit, suit with the jacket off and carried, or even a short sleeve polo shirt and cotton trousers on a Friday with no meetings, I am sweating all over my body.
I don't think there is anything but airconditioning that combats heat like this. No fitness level, summer clothing, or lack of undershirt is going to make the least bit of difference.
Theoretically I could drive to work and remain airconditioned the whole way, but then it would take an extra 40 minutes to get to work and I'd be adding to the problems that are leading to climate change, rather than doing my best to avoid it by taking mass transit.