[parag_c_mehta]

I am not a proponent of Extreme fitness but HIIT is several times more effective then plain running or biking or other activities when you compare it with the time you give.

20 Mins of HIIT = 60 minutes of Jogging.

It's all about maximizing results...

[jchrisa]

Maybe the root cause (of interest in HIIT) is the standard American hurry. If we all slowed down we'd probably be more healthy as a people.

Also, there's a difference (and some overlap) between being healthy, and looking ripped. Eg you can be one without the other. One of the reasons I enjoy visiting countries that don't view a rushed and punishing car-commute as normal, is that everyone looks so happy and healthy.

[TeMPOraL]

> Maybe the root cause (of interest in HIIT) is the standard American hurry.

I agree, I think that's the root cause. There are more things we'd like to do than time available, so people optimize.

> If we all slowed down we'd probably be more healthy as a people.

Probably true, but unfortunately we don't have much choice. We slave away most of our lives to keep the economy going, so it's hard to slow down. The problem isn't people having too much time for their hobbies.