There's a range of how much people sweat,

been thinking about this as a factor:

- Consuming more salt causes you to retain water.

- If you are more 'saturated', you sweat more and more readily. Think of a sponge- when full of water, it takes

only a light squeeze to get a lot of water out; when not as full, takes harder squeeze to get less water.

- That sweat is more salty, producing more sweat stains.

- Being used to the feeling of being 'full', and 'salty' then leads to drinking many large bottles of water, producing

more sweat.

- So in some measure, this could be the body getting rid of excess water & excess salt, beyond what is needed

for cooling.