Peter Attia chose a seven-day water-only fast in New York to avoid disrupting his children.

“part of the reason I did seven days was that's how long I was in New York and I didn't want to fast at home because I didn't want to kind of weird out my kids so I that was the other you know cuz you could as well why didn't you do it for five days why didn't you do it for ten days or whatever it was like look I'm in New York from a Sunday to a Saturday the entire time from you know up to down I will just not eat”

“water-only fast literally no coffee nothing but h2o in terms of yeah I didn't I I was super strict yeah no coffee a couple times I had tea like a caffeine-free like I drew some some tea I had bullion as I said bullion that was basically just sodium there was no fat in it or anything like that because obviously if you have real bone broth or similar things you're gonna get some calories but absolutely no coffee which was again I'm not a coffee addict but I love me some coffee that was just out of routine and ritual it was painful to look at my beautiful French press and all of my trimmings and not make coffee every day and I also didn't chew gum or use or have any sort of artificial sweetener”