Primal and Intermittent Fasting are not tied together, one has naught to do with the other. I think for many people the issue is eating processed foods which are often made to get you to eat them endlessly will interfere with proper eating patterns. Anyway, just jump in and try one of the methods, like not eating for 16 hours and then eating your 1,2 or 3 meals within an 8 hour period of time. When I started this I kicked it off with a 24 hour fast. IF has allowed me greater freedom in going longer periods of time without having to shove inappropriate food into my mouth.