How do Haredi / ultra-orthodox Jews survive the extreme heat with traditional garb?

Not going outside & blasting the AC indoors is the obvious answer. But I live in an ultra-orthodox neighborhood & I see many people outside even when there’s extreme weather alerts for heat.

So I’m genuinely curious how they avoid heatstroke – especially when walking on shabbat.

I think it’s generally worse for men than women – just based on the type of clothing they wear. But I could be wrong.