In the first couple of weeks following a keto or low carb plan, you will lose lots of water weight up to ten pounds or more. (lowcarbalpha.com)
For those of you who think you like to be covered in lots of layers while you sleep, remember that the first few weeks after the baby arrives, that sleep will be very sweaty (you're losing a lot of water weight) so think natural fibers and don't feel bad if you need to take a towel to bed with you. (onehotmama.com)
In addition you will be losing a lot of water weight and toxins from the body through sweat during your session staying hydrated will only help to flush them out. (cryofuel.com)