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URL:  http://boards.fool.com/i-dont-think-anyone-is-saying-exercise-doesnt-30480700.aspx

Subject:  Re: A new year Date:  1/11/2013  5:14 PM
Author:  zoningfool Number:  57549 of 58676

I don't think anyone is saying 'exercise doesn't work' just that you can't outtrain a crappy diet and that it is more practical to create a caloric deficit via the 'calories-in' (i.e., diet) side than via the calories-out' (i.e., exercise) side of the equation. And the NEAT issue just underscores this. It's simply easier to forgo the jelly-filled donut to begin with than it is to try to exercise away the excess calories it contributes to your fat stores.

There was a show about the Mayo Clinic Diet on one of the PBS stations that alluded to this--and I found this from the site which reiterates the point:

Which is better for weight loss — cutting calories or increasing exercise?

Answer
from Donald Hensrud, M.D.

Cutting calories through dietary changes seems to promote weight loss more effectively than does exercise and physical activity. But physical activity also is important in weight control in that regard.

The key to weight loss is burning more calories than you consume. Because 3,500 calories equals about 1 pound (0.45 kilogram) of fat, you need to burn 3,500 calories more than you take in to lose 1 pound. So if you cut 500 calories from your diet each day, you'd lose about 1 pound a week (500 calories x 7 days = 3,500 calories).

For most people, it's probably too difficult to eliminate the amount of calories through exercise that you could through dieting. That's why cutting calories through dieting is generally more effective for weight loss. But doing both — cutting calories and exercising — can help give you the weight-loss edge. Exercise can help burn off even more calories than just dieting.

Exercise also is important because it can help you maintain your weight loss. Studies show that people who lose weight and keep it off over the long term get regular physical activity. If you lose weight by crash dieting or by drastically restricting yourself to 400 to 800 calories a day, you're more likely to regain weight quickly, often within six months after you stop dieting. Getting regular exercise also can help prevent excess weight gain in the first place....


http://www.mayoclinic.com/health/weight-loss/AN01619

I, for one, am not saying you shouldn't exercise--of course you should--if for nothing else but general conditioning--not to mention lean muscle preservation while dieting, but it's not the more practical approach when it comes to weightloss. It is diet that is most critical.
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