Women sweat less prolifically than men, even though they have more heat-activated sweat glands per unit of skin area. Women begin sweating at higher skin and core temperatures. For a comparable exercise load, even after equal acclimatization, women produce less sweat than men.
Though women sweat less, they tolerate heat similar to men of equal fitness at equal exercise levels. Experts believe that men likely use more evaporative cooling while women make more use of circulatory cooling. The experts point out that producing less sweat to maintain core temperatures protects women from dehydration.