Sorry meant to bold first bit:
*I disagree about "no women are able to bulk up". I bulk up very quickly.
If you are prone to acne and are good at maths, have a longer ring finger than index, and good spacial relation (IE you can parallel park on a dime) then you will bulk up, as you have sensitive testosterone receptors."*
My ring finger is longer then my index, but I have ADHD so no good at maths (due to it requiring too much concentration on my part) and parallel parking always requires concentration so...
I do "bulk up" initially and gain muscle very quickly, and a lot of it. But I would never say not to lift heavy, because now that I'm burning off the fat covering the muscle and my body is starting to look f-ing amazing. I wouldn't say I'm "lean" I would say I'm curvy and muscular (still have boobs, got a great firm ass, no cellulite, no wobbles and obvious muscles in my arms and legs). I'm more a muscly, slimmer Ashley Graham then a Chloe Madley.
I LOVE being able to bench as much as some of the guys, and toss my 20kg 4 year old in the air. Lifting heavy has totally changed my outlook to exercise and my body. I love it!