the.com/sweaty
the body's built-in air conditioning, dripping proof you're working harder than you'd admit
Cooling systemEvaporating sweat actually drops your skin temperature
Mostly waterSweat is 99% water, 1% salt and minerals
Two million poresHumans carry up to four million sweat glands
Stress sweatArmpit stress sweat smells worse than heat sweat
Fingerprint clueSweat residue leaves the prints detectives lift