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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 LaLanne

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Jack LaLanne
Age: 96 †
Born: 1914
Born: September 26
Died: 2011
Died: January 23
Actor
Author
Businessperson
Chiropractor
Dietitian
Inventor
Nutritionist
Television Actor
Television Show Host
Writer
San Francisco County
California
Francois Henri LaLanne
Francois LaLanne
Jack Lalanne
Francois Lalanne
Using
Carbs
Source
Grumpy
Brain
Preferred
High
Protein
Littles
Diet
Little
Diets
Glucose
Fuel
Carb
Lows
Carbohydrates

More quotes by Jack LaLanne

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Ask 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
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I think fat, out-of-shape people should be fined.
Jack LaLanne
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Jesus, when he was on Earth, he was out there helping people, right? Why did he perform those miracles? To call attention to his profession. Why do you think I do these incredible feats? To call attention to my profession!
Jack LaLanne
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Ten seconds on the lips and a lifetime on the hips.
Jack LaLanne
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Remember this: your body is your slave it works for you.
Jack LaLanne
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Inactivity is the killer and, remember, it's never too late.
Jack LaLanne
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Forget 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 LaLanne
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Homosexuals love to look good. They're clean, neat. They're fastidious, well mannered and well educated. They like aesthetic things. They like good, firm, tight bodies. Health. They want to attract other guys. What's wrong with that? Why be slobs? You've got to be insane to suggest that because someone looks good, he must be gay. That's envy.
Jack LaLanne
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You only live once, why be miserable? Fat people are miserable -- you are carrying 50 lbs on your shoulders all day, you get a disease called pooped-out itis. Don't tell me that they are happy with the way they look and feel. I have to be honest, that is all I have.
Jack LaLanne
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I don't think about wealth. I get one thing in my mind, How can I help people...come on humans...do something, you know. Let's wake up. Man alive...you're half dead. Let's do some living.
Jack LaLanne
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Go on, have a glass of wine with dinner. What is wine, anyway? Pure grapes. A glass of wine is much better for you than a Coke.
Jack LaLanne
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You can exercise vigorously and eat junk and get by. But you can't eat perfectly and not exercise. Look at many athletes today they are human garbage cans. They eat anything, but they exercise so hard they burn it up. But why not exercise and put the right fuel in too?
Jack LaLanne
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I believe so strongly in what I do and I practice what I preach! My Dad died at fifty - do I have to die at fifty? My Dad ate all the junk food, he wouldn't exercise - how can you tell your Dad anything? We know about nutrition and we know about exercise. There's no reason for anybody to be sick and tired, fat and out of shape - it's ridiculous!
Jack LaLanne
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I'd rather see you drink a glass of wine than a glass of milk. So many people drink Coca-Cola and all these soft drinks with sugar. Some of these drinks have 8 or 9 teaspoons of sugar in them What's the good of living if you can't have the things that give a little enjoyment?
Jack LaLanne
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Do you know how many calories are in butter and cheese and ice cream? Would you get your dog up in the morning for a cup of coffee and a donut?
Jack LaLanne
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The crusade is never off my mind - the exercise I do, the food I eat, the thought I think - all this and how I can help make my profession better-respected. To me, this one thing - physical culture and nutrition - is the salvation of America.
Jack LaLanne
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People thought I was a charlatan and a nut. The doctors were against me -- they said that working out with weights would give people heart attacks and they would lose their sex drive.
Jack LaLanne
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You should be proud of what you're doing, but not conceited. If you can't be proud of yourself, you're a failure. And discipline. To do anything in life you have to have discipline. To accomplish anything, you have a goal, challenge yourself, and work until you accomplish that goal. Practice what you preach.
Jack LaLanne
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The essence of decay is inactivity.
Jack LaLanne
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I never think of my age, never. I could be 20 or 100. I never think about it, I'm just me.
Jack LaLanne