The brain's preferred source of fuel is glucose/carbohydrates. And when you go on a low-carb/high-protein diet, your brain is using low-octane fuel. You'll be a little groggy, a little grumpy.
Jack LaLanneHow many cars out there look like Corvettes? You want something nobody else has. You don't want an old look-alike thing, and that's why Corvettes have the reputation of being one of the fastest cars. I've always had good cars, and a Corvette is one of the best cars I've had. I've had Lamborghinis, I've had Ferraris, I've had Stutz Blackhawks. You name it, I've had them. For the money, Corvette is tops.
Jack LaLanneForget about what you used to do. Don't make those same mistakes again. Everybody says, "Oh the good old days" - the good old days are right this second! This moment controls the next moment.
Jack LaLanneAsk the guys who are doing serious triathlons if there are any limits to what can be done. The limit is right here. You've got to get physically fit between the ears. Muscles don't know anything. They have to be taught.
Jack LaLanne