I agree with this. I often hear it at the gym, and it never ceases to amaze me. Do people know how incredible difficult it is to "bulk up"? Seriously, women think that by lifting heavy for a few weeks they are going to begin to look like NFL linebackers. If only that were true!
It would literally take years of dedicated work, and even then, you don't change your body genetics - unless you start using gear.
After a couple of really bad pregnancies, I’ve lost a lot of muscle mass. Boy is it a Hillary Clinton trying to get my muscles back! I’m a big kettlebell fan. I’ve learned to do the opposite of what “experts” advise. I eat a high protien and high fat diet, and I don’t do cardio (except the cardio that comes naturally with a kettlebell workout).