[henry81]

I may be off but I don't think it's about "low rep vs high rep" or "light weight vs heavy weight", it's about working your muscles to fatigue.

Separately, I know Tim Ferriss wrote a piece on this too.

[AlexC04]

IIRC - Ferriss' point was to go as heavy as you possibly could. Or at least that was my read of it. I've been doing the program myself for the last few weeks and love it.

http://www.fourhourworkweek.com/blog/2007/04/29/from-geek-to...

[ashconnor]

There's not a chance in hell a human can develop 34 pounds of muscle in 4 weeks. That article in pure snake oil. Maximum sythenthesis of muscle is around 3-5 pounds/month.