Why do humans sweat while stressed?

Read also:

• Why is India lagging behind China in economic development when India is a democracy while China isn’t?
• Should any books be banned from school libraries? Why is it important for students to read certain books in school?
• If gays can get married, why can't I marry my dog or a cheeseburger?
• In your humble opinion, why does the narcissist mistake kindness for weakness in some people?
• Astronomers discover most powerful cosmic explosions since the Big Bang - Live Science
• Why is it so hard to date nowadays?
• Do snipers lay on top of tank turrets during combat?
• Is Matt Gaetz qualified to be Attorney General of the United States?
• Is it common for girlfriends to have close male friends who are single and not related to them?
• Why do people believe that global warming is man made?
• Could humans be selectively bred, like dogs, to create 2 subspecies that can no longer have offspring? Do I not understand selective breeding properly? Im not worried about the moral implications, just the science please.