---
product_id: 129788786
title: "The Haywire Heart: How too much exercise can kill you, and what you can do to..."
brand: "christopher j. casedr. john mandrolalennar zinn"
price: "HK$316"
currency: HKD
in_stock: true
reviews_count: 8
url: https://www.desertcart.hk/products/129788786-the-haywire-heart-how-too-much-exercise-can-kill-you
store_origin: HK
region: Hong Kong
---

# The Haywire Heart: How too much exercise can kill you, and what you can do to...

**Brand:** christopher j. casedr. john mandrolalennar zinn
**Price:** HK$316
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** The Haywire Heart: How too much exercise can kill you, and what you can do to... by christopher j. casedr. john mandrolalennar zinn
- **How much does it cost?** HK$316 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/129788786-the-haywire-heart-how-too-much-exercise-can-kill-you)

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## Description

The Haywire Heart: How too much exercise can kill you, and what you can do to protect your heart

## Images

![The Haywire Heart: How too much exercise can kill you, and what you can do to... - Image 1](https://m.media-amazon.com/images/I/71wnfC7rY9L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    A very useful book.
  

*by W***N on Reviewed in the United States on August 8, 2017*

Six weeks ago, I had a vasovagal attack donating plasma at the Red Cross and lost consciousness, so I was taken by ambulance to Caualty at the local hospital.  An ECG showed minor changes consistent with an athlete's heart (I'm a retired marathon runner, who is still physically active in a gym).An echocardiogram was advised, which showed severe left atrial dilatation, which I accept is due to damage resulting from excessive training training for marathons (it's well described in the book). So, I was referred to a cardiologist, who noted that I have a resting heart rate of 40 bpm (sinus bradycardia, not heart block), so he advised me to have an artificial pacemaker.This book was very useful in providing alternative advice.  My resting heart occasionally drops to 34 bpm (anything above 30 bpm is acceptable as normal in athletes) with no symptoms and a completely normal unchanged blood pressure.Most of the book on arrhythmias doesn't appear to apply to me - I'm never aware of my heart beat or have shortness of breath exercising or at other times.  And the chapter advising supplements to me just appears to be junk science.I'm still being investigated.  The next step is to have a Holter monitor, which might provide some useful information.  Or not.I think the vasovagal attack was due to jet lag (I'd flown from Munich to Perth 2 days earlier - a 17 hour flight with a 6 hour time zone change, so there was probably some tiredness involved).  And the Red Cross had recently changed their procedure for plasma donations, not replacing the 900 ml of plasma donated with a litre of saline till the end, so there was probably some low blood volume involved too.I don't think I need to worry much.  I'm retired from the heavy marathon training, so that's not a problem.  I'm currently doing cardio' workouts in a gym, which are comfortable, to maintain fitness.The book has provided me good reasons for declining a pacemaker.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Read this fantastic book even if you are not a sufferer of ...
  

*by V***A on Reviewed in the United States on August 16, 2017*

I have been VERY active my entire life.I am a 60 year old male.I played ice hockey and lacrosse, mobile positions, wing and crease attack and middy respectively from age 8 to 18.I always have been a very avid bodysurfer. I consider myself extreme in this regard, at it 9 out of 12 months, bodysurfing big hurricane surf sometimes up to 8-10 feet, when such surf occurs here on Long Island.This is MAJOR aerobic activity, maybe more so than Tri.I competed in triathlons for 20 years winning my age group in Clydesdale division in every race I entered except one second place finish. In races not offering a Clydesdale division I would finish in top 5th of my age group. I would guess I completed about 60- 75 sprint length tris with never a DNF.I mention this to convey that I was a competitive Triathlete, not merely a event T-shirt collector type participant or a once or twice participant.I was a competitive runner for over 36 years, 6 days a week year round with almost no running injuries and therefore almost no time off.Most months, year round I competed in at least 2 events bike races, ocean swims, runs.Some months I would race three weekends out off the four.About 6 years ago I was diagnosed with atrial flutters and underwent a cardio conversion.This was around the time of major life stress.This was followed up with a atrial flutter ablation about 4 years ago and a atrial fibrillation ablation 3 weeks ago.I stopped competing in running races and Tris about 5 years ago due to other health issues, prostate cancer and other surgeries but I’m still active cycling, swimming and bodysurfing.Just finished the Haywire Heart.The HH is revelatory, dispelling many ideas.Read this fantastic book even if you are not a sufferer of these heart issues if only as a guide to your activity level.Dr. Mandrola explains, in his clear and concise style, complex issues of cardiac and exercise physiology.Perhaps the main takeaway is the explanation that, to your doctor, you are probably a seldom seen anomaly with an activity level they very rarely see and often misunderstand.Dr. Mandrola cites example of Cardiologists and Electrophysiologists failing to interpret data and test results correctly due to biases and lack of specific experience with our rarer test results.The case studies of athletes including that of Ironman god Dave Scott are a wealth of information.Everyone who seriously competes in any endurance sport, especially Tri, will benefit immensely from reading this book.The correlation between stress as result of competing and training and other life stress is eye opening.Kudos to Dr. Mandrola!You have filled a giant void with your effort.Have fun out there but be forewarned!Reply

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Perspective and Context on the Heart Risks of Long-term, Intense Aerobic Exercise
  

*by W***E on Reviewed in the United States on April 5, 2017*

I have run for 50 years and was diagnosed with 2nd degree heart block and intermittent atrial flutter several years ago.  When the flutter kicks in it definitely interferes with  exercise: running, hiking, biking -- any aerobic activity. This book was recommended by a neighbor -- a mountain climber and long-distance masters bicycle racer. It was a much appreciated recommendation and provided a good deal of context and background that helped me better understand the nature and potential fixes to my condition.I should say that often the book focused on heart conditions and arrhythmias other than those of direct, personal interest to me.  The segment on atrial flutter was relatively brief but quite informative; the book made almost no mention of heart block.The Haywire Heart was a useful and informative read. It seemed well researched, rational, and balanced. Its illustrations were also useful. While I might have quibbled a bit with its organization and coverage, I would definitely recommend it for anyone seeking knowledge and perspective on (aerobic) exercise and risks to heart health.

## Frequently Bought Together

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-31*