I was talking the other day to a friend who told me that although she was training for a half-marathon and running long distances (over eight miles) a lot, she wasn’t losing any weight. I don’t think this is an uncommon thing to hear, and there are probably a few reasons it could be true for her. One…she might be eating more to compensate for her higher energy demands. Two…she may be gaining in muscle weight and the scale is just showing weight overall (in this case, I say who cares what the scale says). Three….her body may have adapted somewhat to her cardiovascular training by becoming more energy-efficient. This is good if you’re an athlete, but bad if you’re trying to lose weight.
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