Sat, Dec-31-11, 16:23
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Experimenter
Posts: 25,865
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Plan: DDF
Stats: 202/185.4/179
BF:
Progress: 72%
Location: San Diego, CA
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Mark defines it as 70-80% of maximum heart, I believe.
What in our evolutionary history supports exercising that much for that long? Yeah, I know some bushmen will follow a deer for hours and run it down, but I doubt they do it every day.
Sustained sorts of cardiac (it doesn't have to be jumping around, it can be running, elliptical, climbing stairs, whatever...) produces a lot of cortisol. I'd really like to see chronic cardiacs take a 24 hour cortisol test and see what sort of results they get.
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