Swings are for fun or for naps?

I think we've used our swing at home too often for getting the boys down for naps ...

For the first 15 minutes or so, Gabe, Liam and Iosaf all loved their first time on swings at a playground...

Yosi:

Gabers:

Schmimo:

... but eventually it became obvious it was putting them to sleep...

Here's Yosi again:

Here's Gabe again:

And here's Liam :)