Several schools of thought on this. Here's mine:
Cardio during Famine should certainly be LISS. Famine is tough enough and HIIT takes a lot out of you. The Famine workouts do that. Like, really do that
During Feast, I much prefer HIIT as it has several advantages vs. LISS. They are as follows:
1.) More fat burned
2.) More GH!
You read that right. Take a gander at the following: CREDIT: ERGO-LOG -
https://www.ergo-log.com/index.html
Metab Syndr Relat Disord. 2009 Aug; 7(4): 363-8.
https://www.ergo-log.com/intensivecardio.html
RESEARCHERS CONLUSIONS
"There were significant differences in the amount of abdominal fat lost by the test subjects, however. The HI group lost considerably more abdominal fat than the MI group".
20 MINUTES TO A LONGER LIFE: ANYONE IN?
This from Dr. Mercola's newletter (highly recommended):
"Suck This 'Magic Hormone' into Your Body and Transform Your Health - Takes Just 20 Minutes
A recent study published in the journal Mechanisms of Aging and Development confirms the "anti-aging" effect of high-intensity training.
Telomere shortening occurs as you age, however the factors involved are not entirely understood as of yet. The study was conducted to determine whether age-associated telomere shortening is related to habitual endurance exercise and maximal aerobic capacity.
The results suggest there's a direct association between reduced telomere shortening in your later years and high-intensity-type exercises.
The authors' state:
"The results of the present study provide evidence that leukocyte telomere length (LTL) is related to regular vigorous aerobic exercise and maximal aerobic exercise capacity with aging in healthy humans.
LTL is not influenced by aerobic exercise status among young subjects, presumably because TL is intact (i.e., already normal) in sedentary healthy young adults.
However, as LTL shortens with aging it appears that maintenance of aerobic fitness, produced by chronic strenuous exercise and reflected by higher VO2max, acts to preserve LTL.
Our results indicate that leukocyte telomere length (LTL) is preserved in healthy older adults who perform vigorous aerobic exercise and is positively related to maximal aerobic exercise capacity. This may represent a novel molecular mechanism underlying the "anti-aging" effects of maintaining high aerobic fitness."
10 MINUTES TO MORE GROWTH HORMONE: ANYONE INTERESTED?
High-intensity interval-type training also boosts human growth hormone (HGH) production!!!!!!
A 2003 study published in the journal Sports Medicine found that "exercise intensity above lactate threshold and for a minimum of 10 minutes appears to elicit the greatest stimulus to the secretion of HGH."
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