The Vietnamese continually amaze me with their capacity to sleep anywhere, anytime. Whereas people in the USA generally sleep behind closed doors or in a secure environment, Vietnamese sleep pretty much anywhere at the drop of a hat -- kids on mobile motorbikes in heavy traffic, xe om drivers on top of their bikes, people at construction sites grabbing 20 winks, pushcart operators, etc. It's remarkable. I've snapped a couple pics and will try to get more.
This worker is catching a snooze around lunch time. Busting up pavement sure is hard work.
Here's a guy dreaming of sugarplums while perched on his bike. I snapped this one at about 11pm walking home one night. It's a bit grainy due to the low light.