Is there anyone that does take naps in the afternoon?
As a side effect, dinner shifts later in the day. This is noticeable in places where siestas are common, like Spain -- early breakfast, nothing happening in the mid-afternoon, and then everyone emerges for dinner and night life around 8-10 p.m.
Personally I prefer this polyphasic sleep, because I have more functionally active waking hours and I experience very vivid and memorable dreams which, though rarely "pleasant," are always incredibly moving and feel critically important to me
I do not know if this is universal or if it is genetically unique to my lineage, as again, I've noticed many in my family are the same way as me in this regard. I assume others must then be this way as well, though they may not have been raised thinking this behavior is normal or desirable.
The issue comes with scheduling, and this is not always possible. Luckily most of my family is well-off enough to demand whatever they so wish in their vocation. I think most startup founders might be this way also.