[luckylion]

I've not done 17/7 or 16/8, but I've done 1/0, i.e. alternate day fasting for quite a while. Compatibility with social life aside, I find it much harder to sleep after not having eaten for 24 hours, and it didn't get significantly easier to fall asleep after a few months. My sleep would also be lighter, so I'd wake up more often from some random noise.

I don't know how much this plays a role in 17/7 etc, but if it does, skipping dinner might make sticking to it harder than skipping breakfast.