That looks like me, at my age, trying to get into a corvette. Also, just so you know, cats have no bones.
Cats seems to belong to the “gelatinous solids” class.
Cats can also control their weight. Watch a cat float from the floor to the top of the dresser, then experience the same cat jumping from the dresser to your stomach. Must be a tenfold difference in weight. They think it’s funny.