Women sweat less than men. Heat acclimation and resultant increase
in sweat production and shift from 'high salt' to lower salt sweat takes
1-2 weeks, but you have to have pretty much multihour daily exposure
to heat at a work level that should induce sweating for the acclimation
to occur. Obviously fluid intake has to match sweat output. If you
don't work outdoors, it will take longer to acclimate. Average humidity
relates also, it is easy to sweat at 80%+ humidity levels, at sub 40%
humidity, sweat can evaporate fast enough that it remains insensible.
The sweat volume is not much different in either case, just a lot more
obvious at higher humidity.