Mono sprites

[STM1993]

I would like to know what do you think about these animations.
Do they look "alive" //Have enough movement, not so robotic and more like human and stuff.
//frames 1,1,2,2,3,3,4,4,3,2
//frames 1,1,2,3,4,4,1,1
Please share your opinion with me.
Since I am trying to "invent" the "perfect flow" which would look like kind a realistic and smooth with just few different frames.

the hand mouvements on the first one are abit weird.
the second one is flawless.

edit: a frame on the second one feels missing.

I think its because of the way the arm on the left moves.
1) Given the exaggerated amount of upward movement in the lower arm, you'd think the upper arm would move as well(its simply not possible for an elbow to make that kind of outward motion), but its clearly stiff.
2) Personally I think there's too much movement in the lower arm. Currently the bottom of the fist will align to the other arm's elbow at frame 4. Maybe it would look better if the midpoint of the fist aligns to the elbow instead?

I'm okay with the second animation so far.