Fri, Apr-30-04, 10:32
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Senior Member
Posts: 248
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Plan: Atkins
Stats: 125/112/105
BF:
Progress: 65%
Location: Park City, Ut
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It's not necessarily that their body catabolizes their muscle tissue, but they (and any endurance athlete) have more of the "Slow-twitch" muscles fibers as opposed to the shorter, "fast twitch" muscle fibers. (Although many elite runners diet down excessively and therefore they do catabolize)
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