Carbohydrates are pure energy foods that you continually use to keep your body alive and in motion. Protein is used primarily to maintain structures that already exist, and therefore very little is needed. A 150LB person doesn't need any more than ~100gms of protein unless they are in heavy training and/or dieting, at which point they may need to go as high as 1gm of protein per pound of body weight. As an example, 150gms of protein is ~1/3LB and no one can put on that much new muscle every day (that would be almost 2lbs/wk for the rest of your life) but an active 150LB person will use 400-500gms of carbohydrates daily to support normal energy needs.

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