It's important on any IF plan to make sure that the calories you eat during the feeding times -- sounds like the zoo! -- don't exceed your daily recommended amount.
In general, common sense prevails; maintaining healthy meals during feeding times is still important, and daily calories can add up. So don't reward yourself for making it through a fast by gorging at an all-you-can-eat Chinese buffet.
You'll be hangry at first
There's no way to sugarcoat this; you'll be hungry and cranky for the first few days. Making any kind of major changes to your eating schedule will do this as your body adjusts to what time it expects food. Warn all of your loved ones that you may turn into a monster for a little bit.
"In that first week or so, you may feel tired, you may feel a little bit sluggish, some people may get a little bit angry, but it’s a metabolic adjustment that’s going on with your brain," Dr. Splaver says.
It's the worst in the beginning, but should taper off after your body gets used to this new way of eating, especially with the leangains plan, which is a more regular eating and fasting schedule.