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Message: <blockquote data-quote="bettingpython" data-source="post: 2085274" data-attributes="member: 4307"><p>You need 20 minutes every other day to improve cardiac health, more than that you're doing it for other reasons. Ironically you'll get the greatest benefit when you start out and begin walking if you have not done any cardio. I'm now running 5k 3 times a week and loving it. When I began back in October I barely made it through 20 minutes of exercise walking 1 minute and jogging 1 minute.</p></blockquote><p></p>