Why don't we adopt the concept of a Siesta?

Every time I suggest this to people, they laugh like 'yeah, good one' but they also complain about how draining the hot weather is and how difficult it is to work in.

Summers here are typically pervasively hot, without much relief. It's difficult to sleep, people have less energy and lower moods, and yet we're expected to carry on working full days.

I think it would make sense for us to close down for a few hours in the mid-afternoon, and have a chance to rest/eat/shower, before potentially reopening for some evening hours (depending on demand, otherwise places could just stay closed until the next day). I'm sure some people will have the mentality of 'just suck it up' but if we have the chance to make things just a little easier, why not do it?

Edit: Lots of comments, thanks all! I can't reply to all of them, but people are making some good points, particularly about commute time which I get would suck. I should clarify that I'm not saying we should copy the Siesta exactly, but adjust it to suit our workplaces more. I think a lot of businesses could probably get away with starting a little earlier and finishing earlier in the day, rather than splitting the shift up within one day. But of course, this is all hypothetical since I don't see our system changing that drastically.