Intermittent Fasting 23 Comments Saturday, November 10th, 2007 I received the following email from Xuan Mai who works out at Crossfit NYC. She emailed me a few months ago asking a few questions pertaining to paleo eating and intermittent fasting. Here is what Xuan Mai had to say:Hi Robb,I thought I would give you an update after my first month of Intermittent Fasting especially after the article by you that I read recently on Art Devany’s blog.The first week of IF’ing was difficult but it has gotten better. My fasts are typically between 16-19 hours and I am consuming a predominantly Paleo diet (no grains, no dairy but I do drink caffeinated tea and the once a week espresso). My activity consists of 4 Crossfit workouts per week.