By Simeon Margolis, M.D., Ph.D. Provided by: Johns Hopkins University

Your Healthy Heart

How Hard Should You Exercise? By Simeon Margolis, M.D., Ph.D. - Posted Wed, Sep 05, 2007, 4:32 pm PDT

Showing 16-30 of 90 Comments

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  • 16. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:45 am PDT

    dont talk to me while i run

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  • 17. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:47 am PDT

    SHUT UP

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  • 18. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:48 am PDT

    Comfortable lift for 12-15 reps? Wanna build? Do a weight you can only do 6-10, then do 7-11. Inevitably hold your breath? What a fool.

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  • 19. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:48 am PDT

    The 220 minus age for determining max is barely better than having nothing to go on. It varies a lot from one individual to another. As a 61-year old that formula would give me a 159, which is a rate I could sustain for at least 10 miles of running. I know others my age who have a higher one that that. 50% of max for "moderate" exercise is barely moving.

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  • 20. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:49 am PDT

    Hey Sylvia keep your stupid ignorant commercial out of the public discussion area.

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  • 21. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:49 am PDT

    your math is wrong. 220-50=170 x 0.5=85 x .7 = 59.5 The old man moderate heart rate should be 59.5 not 85 check your math.

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  • 22. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:49 am PDT

    What about he frequency of the moderate-intensity exercise, in terms say days per week?

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  • 23. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:51 am PDT

    what is a good way to lose your lovehandles what kind of execises can i do to lose them

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  • 24. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:52 am PDT

    Thank you.. Nice and simple and helpful!

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  • 25. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:55 am PDT

    41 yr old male here. I run and keep my heart rate at 135-145 which is roughly 75-80%. When I first started running I could run about 2.5 miles in 30 minutes. Now I run almost 4 miles in the same time and I never have my heart rate above 145. I am getting stronger but not stressing my heart. That is the most important thing for an old guy like me. Most people don't realize how bad they stress their heart. Know any 40 year olds who died in a pick-up basketball game? I sure do. Stress your heart and you just might die.

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  • 26. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:55 am PDT

    exercising has been difficult, sometimes when on theelipical for30min. I feel I am not working out as hard because it seems that all the rest are doing about 3-4 times faster than myself.

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  • 27. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:56 am PDT

    ""By the end of my run, my heart rate is up to 80-85% of my max. If I trained at 50-70%, I'd never get very far. I do push myself to run fast at the end of the run & my heart rate recovery is quite fast. Could the formula or the ranges not be one-size-fits-all??"" I'm 55 and I've been running for 4 years. My resting heart rate is 47-48. My maximum heart rate, based on a test, is 164-166. I factor my resting heart rate into my training zones using the Kervornian (sp?) method If I want to train at 70% of maximum heart rate then the calculation is like this. 165(MHR) - 48(RHR)= 117 117 x .70 = 81.9 81.9 48(RHR)= 129.9 129.9 or 130 becomes the 70% training zone. If you've been running for years, you more than likely have a low resting heart rate and if you don't factor in a low resting heart rate, you could be training too low when using the "one size fits all" heart rate formula.

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  • 28. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:58 am PDT

    No matter how much or how little I exercise, even just working on the yard or house, I end up with debilitating aches for days. I'm fine the day of the activity, but the next day I'm feeling extra tired, then by day 2 I want to lay in bed and eat all day without getting satisfied. By day 3, I am debilitated, and by day 4 I am still aching all over and especially in the areas worked. I end up with only 1 or 2 days a week where I am able to walk, lift, be on my feet for 8 hours straight. The rest of the week I am moping around suffering. I am 44 and have tried for 30 years to over come this pattern with no success. Why?

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  • 29. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:58 am PDT

    it is true that you are not supposed to take extra exercise because it will harm the body. but now and then you have to push yourself to the limit to know exactly if you are fit or not................... this is my tip, hope it is good and helpful.

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  • 30. Posted by A Yahoo! Health User on Sun, Sep 09, 2007, 7:59 am PDT

    I am 60 years old and exercise at the threadmill. Recently I got one of those heartbeat-measuring watches and was surprised to find what I felt was a "good, pushing" running speed got me a heat beat of 165. Keeping to the limits mentioned in the article for my age I didn't feel I was doing any exercise at all, didn't sweat a drop and could do it wearing a suit and tie (and carrying a briefcase). There is something funny with those numbers. Could they be wrong?

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