I think anyone can do it, honestly. Someone who is incredibly out of shape and hasn’t worked out in years can do it if they put their mind to it. It would be incredibly hard, but you can still do it. I was kind of in shape. I had lost 20 pounds from doing an elliptical and occasionally working out with my mom but it is still insanely hard for me.
So you've probably been asedk this over 9000 times but.. How fit were you before you started insanity? Like, would you say beginners could do it orrr?