Do you need to drink water before or after the procedure?

You can deplete body reserves of one or more minerals and electrolytes, especially, if you are using the FIR mat heavily on high heat. 

If your nutrition is complete and you hydrate yourself properly while you are on the mat, you’re not likely to create a mineral or electrolyte deficiency through recreational procedures a few times a week.

Proper hydration is a must if you use your FIR mat for high heat sessions and sweat a lot. 

Drink a lot before procedure, after and if necessary while you are on the mat.