Despite the late hour, there is a child on one of the swings, trying to figure out how to use them. She's given up on starting from a resting position at this point and instead grabs the chains with her hands to take a few steps back and then jump onto the seat, using the momentum to swing forth and back a few times, trying to somehow make the movement last. You have to move your legs, she knows, but whatever she is doing doesn't seem to be enough.

And then the swing isn't swinging anymore again and she slides off the seat to take a few steps back again.

It always looked so easy when children were doing it in trideo advertisements, the ones promoting some sweet food as healthy food for active children. It really isn't.