I don't think the chair thing has much to do with sex, it's just technique. I'm female and on my first three attempts I could not pick up the chair, but upon watching the female in the video I realised I was simply doing it wrong. When trying to pick the chair straight up, you're leaning too far forward so your centre of gravity is over the chair not your body. To pick it up, you just have to tilt it first. I'm sure males are just as capable of tilting a chair as females.