My normal eating schedule is 16:8 (intermittent fasting), but I do a 3 or 4-day water fast ever month, plus a 7 day fast every 3-4 months. I'm at a stage right now where I am basically addicted to fasting - I love the feeling of being light as a feather, unencumbered, and it definitely gives me a boost in the creativity/productivity department.
Plus, I haven't been sick since the first 7-day fast I did.
Impressive! when did you complete your first 7-day fast?
My first one was in January 2017. I slid back into some bad dietary habits later that year, but I've been following my current regimen for about two and a half years now. And the last time I was sick and had a cold was December 2016 (I used to get sick at least twice per year) - I attribute that mostly to fasting.