I had some issues during the initial days of my IF. Intermittent fasting is a great mechanism when it comes to weight loss and living a healthier life. But eating properly during your feasting period is equally important. There is a high probability of missing out on the important multi nutrients your body is craving. So for me I have started adding some herbs and spices that are full of the goodness of Ayurveda and all my issues are now gone and I am in the best shape of my life and feel much healthier. I followed some great intermittent fasting recipes. You might get some great ideas.