I'm a marathon runner. I find that I trend to lose muscle mass as the distances I run get longer, but I also trend to get more definition. I've never really worried about keeping the mass on so I can't really give you advice on how to do it. When I train hard for a long race I get really skinny but that's fine with me cause I like to go for good times and extra weight just slows me down...
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I guess what I'm trying to say
Is whose life is it anyway because livin'
Living is the best revenge
You can play
-- Def Leppard

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