[quote=@Sleeth]
<Snipped quote by Primal Conundrum>

They have certain abilities, influenced by their Psion nature. They can spend a power point and not eat for a day for example. There are different models of Elans apparently. I can probably find the place I read it in, but there is the one you speak of too.
[/quote]

[url=http://www.d20pfsrd.com/psionics-unleashed/races/elan]This is the version I'm currently the most familiar with.[/url]