[theunixbeard]

Wouldn't it be elevating your head, rather than your legs? Most sources I've seen[1] that discuss inclining your bed have your head be higher up than your legs.

[1]: https://www.google.com/search?q=incline+your+bed

[rhexs]

I assume elevating the legs would increase blood flow to the brain? Elevating the head would presumably slightly do the opposite?

[cma]

When your foot is swollen from a sprained ankle people recommend elevating it to "drain" it (I'm not sure if that is the real explanation for why, could just lower blood flow and not drain anything).