Apollo astronauts falling over on the moon - GIF

[jdurand]

He's wearing a balloon.

Actually, the arms in the suit would give quite a bit of spring if you land on them. If they were just sleeves on the bladder, when inflated you'd stand there with arms straight out to the sides. You'd have to work to bring one forward.

So, they ran a wire rope from one wrist down across the chest (in a tube, don't want to catch hair, cooling tubes, or wires) and out to the other sleeve. It kept your arms in somewhat of a C. To reach right you pull in your left arm.

If you landed on them you could bend your arms in and then use the air pressure + your muscle to push back off.