You are encouraged to do it under supervision and/or to have a chat with a Prolon nurse prior to embarking.
It costs similar here and the expense is the main downside. I did manage to get some discount via offers but it still ain’t cheap.
I am doing it mainly for weight loss, but that for health reasons as I want to be back to a healthier weight. I like the idea of the health benefits suggested by the clinical research of autophagy and stem cell rejuvenation etc as a bonus but wouldn’t have thought to do it for that.
Basically I want a way to lose visceral fat and keep it off and this seems to work well for me. Other diets I yo yo and this also seems to naturally make me eat more healthily. I wouldn’t do a water fast outside of a professional retreat/clinic setting and don’t have the lifestyle to do that.
During the day I feel functional but have limited energy so have to use it wisely. First day is fine, third day is the worst. I get spurts of energy and focus. First round I got an awful headache most days but since then that hasn’t been an issue.