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Nutrition Lecture Part 2: Optimizing Performance by Greg Glassman - CrossFit Journal
Video Article

Part 2 of Coach Glassman's discussion of nutrition addresses the refined dietary needs of athletes and what's required to optimize your performance. If you want elite physical output, you must be precise about your intake. "Close enough" won't cut it--or as Coach Glassman more colorfully puts it, "If you want top-fuel- type performance, you need top fuel; you can't just piss into the gas tank."

Most of us are familiar with CrossFit's nutrition prescription: Eat meat and vegetables, nuts and seeds, some fruit, little starch, and no sugar. But to achieve top performance, you have to be specific about the balances of those things and accurate in your macronutrient consumption. You can get far on the workouts alone, but you will not--cannot--reach your true potential without getting particular about your fuel. There's a 1:1 correspondence between elite CrossFit performance and accuracy and precision in your consumption. For more information on getting specific about your intake, see the following resources:

CrossFit Journal # 15 is an annotated reference list of books on nutrition that could keep you reading as long as your heart desires.

CrossFit Journal #21 goes into detail about how to determine how much of what you should be eating to optimize your performance.

In her journal article "Getting Off the Crack," Nicole Carroll, CrossFitter extraordinaire, tells the inspiring story of her dietary conversion and the results it had for her.

Greg Glassman is the founder (with Lauren Glassman) of CrossFit, Inc. and CrossFit Santa Cruz.

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4 Comments on “Nutrition Lecture Part 2: Optimizing Performance”


wrote …

How much fish oil should I take if I am 74 inches and 205lbs. What brand?

If you are doing strictly WOD, what would your activity level be for the Zone diet?


replied to comment from Robert Braley

about .5 grams of Omega 3's per 10 lbs, so about 10 grams, and the concentration of the fish oil will dictate how many you should take


wrote …

Classic video


wrote …

Your wish is my command. 2 spoons of norwegian "tran" for every meal from now...then I expect I'm in the Crossfit Games next week!

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