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Can Extreme Exercise Hurt Your Heart? Swimming the Pacific to Find Out

51 points| juanplusjuan | 10 years ago |npr.org | reply

21 comments

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[+] xiaoma|10 years ago|reply
I applaud both the athlete and the research so please forgive this ignorant question. Even if he can handle the waves, isn't he at a huge risk of being eaten by a shark or other predator as he does a 6 month swim across the Pacific?
[+] lentil_soup|10 years ago|reply
According to Wikipedia, during his Atlantic crossing "he was accompanied by a 40 ft. sailboat that had an electromagnetic field for 25 feet to ward off sharks. He was followed by a great white shark for 5 days."

Any idea how that works?

[+] VLM|10 years ago|reply
Sharks don't have internet access to know where he is, and fishermen have to go to quite a bit of effort to find their catch. Very few people are eaten by sharks, his odds of not being eaten are excellent.

His flesh eating enemies are likely to be microscopic. I would worry about things like contact dermatitis and skin infections from swimming thru who knows what.

[+] VeejayRampay|10 years ago|reply
At the risk of sounding naive, isn't "dangerous for your health" implied by "extreme"? The human body seems to be evolutionary geared towards moderate intensity with regular frequency more than anything else.
[+] cityzen|10 years ago|reply
That is exactly what they're trying to find out. From the article:

"My question has always been, how much exercise do you need to do to injure the heart?" Levine says. "Since Ben was planning to swim across the Pacific Ocean, we thought, hey, this might be a good opportunity."

It could go on to show that extreme (exercising at low intensity for 8 hours a day for 5-6 months) isn't "dangerous for your health".

[+] lifeisstillgood|10 years ago|reply
Does it count if he is using a snorkel? I know that's like the world's dumbest question, but I am really tempted to use a snorkel at my local swimming pool to help get exercise and avoid the whole not breathing for half the time issue.

If he can, so can I :-)

[+] eric_h|10 years ago|reply
You're doing it wrong if you're not breathing half the time. You just inhale sharply and exhale slowly for a few strokes; it should be almost meditative.
[+] sanoli|10 years ago|reply
At my local pool there's a 60+ year old who swims daily with a snorkel. He's a pretty good swimmer, does about 4,000 meters every day.
[+] peteretep|10 years ago|reply

    > how his heart holds up for eight hours of freestyle
    > every single day
I expect NPR to not confuse freestyle and front crawl :-/
[+] cityzen|10 years ago|reply
I think NPR is correct since freestyle means any stroke. Do you really think he's just going to do front crawl for 5-6 months, 8 hours a day? I'm sure he'll do some breaststroke and backstroke as well.
[+] fearandclothing|10 years ago|reply
Generally, at least in competitive swimming, "freestyle" is synonymous with "front crawl." Technically, you can swim using any stroke you want during a freestyle event, but hardly anybody does since the front crawl is both the fastest and most efficient.
[+] sanoli|10 years ago|reply
Except that for pretty much everyone, especially everyone involved with swimming, they are synonymous.