Hi, it was really hot today and I thought: I wear shorts and it´s still hot. So how did folk people ......

Hi, it was really hot today and I thought: I wear shorts and it´s still hot. So how did folk people survive summer?
I know that the wealthy people used silk but common people used hemp or linen and as far as I know they did not wear short sleeves and trousers and most of them spent whole day in the sun.
Thanks.