FYI - when I did my fast just now, I was too wiped out to do stuff I needed to do. I guess I could've forced it but with a Water Fast you should listen to your body so I just switched to a juic fast on the 4th day so I could do stuff. I continued the juice fast until day 7. If your husband wants to fast but is not at leisure to rest as much as his body is asking, he can do that. There is still healing (albeit slower) when juice fasting. :)