Eventually, she realized she needed to increase the amount of food she was eating in order to be able to keep up with her intense new workout routine. (health.com)
IF is a period of time each day your body relies on its own stores for energy versus utilizing nutrients coming in from foods you're eating. (mindbodygreen.com)
First, not only does it not hurt, it can give you valuable information about foods you are eating that are making you sick. (robinberzinmd.com)