Survival skills
A human being can survive an average of three to five days without the intake of water. The issues presented by the need for water dictate that unnecessary water loss by perspiration be avoided in survival situations. The need for water increases with exercise.
Vulcan (Star Trek)
Vulcans are typically depicted as stronger, faster, and longer-lived than humans (although discrepancies have occurred—and although not as long as Vulcans, humans have been shown to live longer in the Star Trek universe than today—presumably as the result of advances in medical science). Vulcans are about three times as strong as an average human because of their home planet's higher gravity, although their durability is equal to humans. There are instances of them living over two hundred and twenty years. Having evolved on a desert world, Vulcans can survive without water for longer periods than humans. Vulcans can also go without sleep for as long as two weeks. Romulans are similar in appearance to Vulcans, with whom they share a common ancestry; they even appear almost identical on Starfleet sensors, with just a minute difference between them ("The Enterprise Incident").