No one has really answered his deeper question. Is it possible to attain 4-5% body fat naturally and keep it with a normal life style? This is assuming you were not born with super lean genetics.
I believe Arthur Jones called his Nautilus machines (and all exercise machines in general) "scientific barbells." My gym has the latest Hammer machines as well as some of the best King an Flex equipment. I'm tempted to say that with exercise equipment like this who need regular free...