Question

why do people perispire on a lot humid day

Answer 1

because of their work including the global warming ,the more hot in day in more in the rai will occur which cause a humid day

Answer 2

As the water evaporates, it transfers the body's heat to the air. ... On dry days, sweatevaporates quickly, which means it also carries away heat faster. On humid days, when the air is already saturated with water, sweat evaporates more slowly. This explains why it feels so much hotter in high humidity