Tired of the bulging wrinkles round my waistline, I'm more serious now about going to the gym and the level of intensity there. My understanding is that protein reserves are to be replenished every 4 hours. Pro bodybuilders will eat a meal every 3 hours. And not because they are masochists. The other day, my colleague who is 66 and rake thin complained about dizziness. He's been skipping bf and lunch. How can he expect his brain to function well with no carbs or other food for over 15 hours?!? Ketogenic diet - while bodybuilders who aim for extremely low body fat want to avoid this like the plague, others seek it out intentionally. In other words, fasting or feasting and everything about nutrition: there are conflicting videos out there. Got anything to share?