I have resistance bands and last time I tried (a month or so ago), I was unable to move even a 1/4 centimeter in the next to last strongest band
. Although I'm a weakling, I tell you, there are pretty good resistance bands out there. They take practically no space and you can take them anywhere you go.
Okay, here are some words of encouragement for those reading this who are still sitting on the fence about this whole thing. Do yourself a favor, get the book, and take it seriously! Then go online and order a barbell and a bunch of weights and try it! They are really cheap (I payed 18 Euro for the barbell and 30 Euros for some weights, plus again 30 Euro for some more weights that you may or may not need), and they don't take that much space - just put it upright next to or behind a cupboard or something. No excuse!
Thing is, you don't get the benefits of this training if you don't do it pretty much exactly as the book suggests, and this means either using machines or free weights. And the benefits are plentiful - it might well be THE most important thing you can do for your health and wellbeing, right up there with diet. It keeps your IQ from declining, prevents all kinds of diseases, gives you more confidence, strength, better mood and the list goes on and on.
According to the authors, by doing this kind of training you'll reach your genetic potential in terms of strength etc. in about 2 years. Who knows how the world looks in 2 years? Better start
now!
And a word for the women: I think many women are reluctant to train with free weights because it's kinda "male" and you would rather do yoga or cardio or use rubber bands etc., but this is a mistake! As the authors of the book point out specifically for women: you will
not end up looking like Arnold Schwarzenegger if you do this training! You will "just" become more lean, more healthy, more confident, smarter and so on. Don't stop yourself just because the free weight section in a gym is often populated by idiot gorilla-males.
And yes, training with free weights is totally safe - just start slowly with small weights (or even no weights at all, using just the barbell) - it may sound daunting, but once you try it, you will get the hang of it in no time. There are also lots of youtube videos out there.
So - if you don't have access to machines and if you don't have any specific issue that
really prevents you from doing this training, order the book and the barbell and get started!