Rapid Tone : How Long Will It Take? So on June 15, after a friend convinced her to try the keto diet with her, Caitlin officially began adhering to the low-carb, high-fat way of life. If you don’t follow an appropriate diet no matter how hard you workout you will not get the results you could/should be getting. With proper guidance, it will be possible to avoid physical injury so that your fitness routine stays on track. The perfect time to eat a larger meal is during breakfast so that you will not eat more during the day. Start your day with a good breakfast.