I think it depends a lot on how it fits into your lifestyle. I did really well with 16:8 for a while in the past. I set my window to eliminate night-time snacking, which was helpful for my nutrition as well as my weight, and it felt like a really healthy discipline at the time. However, now my schedule is different, and 16:8 would mean having to pack most of my meals and eat them at work. Although I *could* do that, it really isn't what I want right now. I enjoy cooking meals at home (and eating them right away when they are their best, not just packing things ahead for the week. I like cooking both breakfasts and dinners, which means they need to be separated by more than 8 hours on most work days. I am now starting one 36 hour fast each week. Again, this works for me now. I ride horses competitively, and really don't like to ride when I am fasted more than about 9 hours. I just don't feel my strength and quickness are as sharp. I need that when working with 1000 lb animals, and when trying to make progress with something that takes strength and coordination. However, right now, it is practical to schedule one day off from riding with lighter exercise that isn't as focused. So the 36 hour fast does work for me. Honestly, I haven't found that IF looses weight any better for me than any other similar diet. However, I do believe in the idea that we are not meant to be full all the time, and that occasional fasting is good for preventing diabetes and maintaining healthy glucose levels and insulin patterns.