⬇️⬇️⬇️BELOW ⬇️⬇️⬇️This research goes to show you that unless you are training for endurance sports, there’s practically NO good reason to engage in long, slow cardio (especially really long sessions as you’ll discover in a moment). 
In a study titled, “Why do individuals NOT lose more weight from an exercise intervention at a defined dose? An energy balance analysis”, researchers found that weight loss from cardio was always lower than predicted (using a standard calories in vs. calories out approach). 

The article, published in Obesity Reviews (Vol. 13 Issue 6), explained that cardio doesn’t work for FOUR reasons: 

A) Some people eat more when they start a cardio program 

B) Calorie burning at rest often decreases with cardio 

C) Calorie-burning lean tissue is often lost 

D) Cardio programs cause you to do less activity over the day 

So if you’re still trying to lose fat with cardio, those are the reasons why it’s not working. 

We have another research study showing the fat burning power of interval training. This time, it’s from China… 

In the study published in the Journal of Sports Medicine and Physical Fitness (2012 Jun;52(3):255-62), 

60 overweight young women were separated into three groups…:

Group 1: did a high intensity interval training (HIIT) program 

Group 2: did moderate intensity continuous training (MICT) 

Group 3: was a non-training control group. 

Groups 1 & 2 trained five days per week for 12 weeks. 

The researchers concluded that the HIIT group achieved better results than those in the MICT group. 

But it’s not “new” to hear about intervals being better than slow cardio for fat loss, and finally, here’s the next SCARY reason you need to avoid cardio. 

And believe me, it’s frightening, particularly to those who “LOVE” their long-distance events like marathons. 

In a study published in the Mayo Clinic Proceedings (2012 Jun;87(6):587-95), researchers concluded that there are potential adverse cardiovascular effects from excessive endurance exercise. 

Frankly, this shouldn’t come as a surprise to anyone. After all, what happens when you do a high-volume workout? 

Well, your muscles get really sore, right? And that’s called 

muscle damage. 

Now think for a second…what is your heart? It’s a MUSCLE. 

Therefore, when you do high-volume cardiovascular training, your heart experiences a LOT of muscle damage, and over the long-term this can damage your heart. 

The researchers from the Mid America Heart Institute of Saint Luke’s Hospital in Kansas City, MO, said that while regular, short workouts are good for your heart, that long-term excessive endurance exercise may cause “pathologic” structural remodeling of the heart and large arteries”. 

Pathological is bad, VERY bad. 

You’ve heard the phrase “pathological liar”, right? Well, just imagine someone with a pathological heart. 

The scientists found that training for and competing in extreme endurance events such as marathons, ultra-marathons, ironman distance triathlons, and very long distance bicycle races, damage the heart. 

Worse, they found that if done for years, it creates “patchy myocardial fibrosis” and could lead to arrhythmia’s. 

Something to keep in mind if you’re a hardcore marathoner. GET YOUR HEART CHECKED!!!

It always disheartens me to read stories of people who pass away while running. So make sure your ticker is up to par if you’re a cardio fanatic. 

Be careful with your cardio, if you must do it at all. For fat loss, it’s certainly not mandatory. 

“Diet” is much more important than exercise (for both fat loss and heart-health), so take some of that excessive endurance training time and put it towards preparing a healthier diet.

As the lead researcher in that last study wisely said: 

“When people come to me as a cardiologist and say they want to run a marathon I say, ‘OK, do one and cross it off your bucket list and then let’s focus on an exercise pattern 

that’s more ideal to producing long-term health benefits and improving your longevity.” 




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