Human
In general, humans can survive for two to eight weeks without food, depending on stored body fat. Survival without water is usually limited to three or four days. About 36 million humans die every year from causes directly or indirectly related to starvation. Childhood malnutrition is also common and contributes to the global burden of disease. However global food distribution is not even, and obesity among some human populations has increased rapidly, leading to health complications and increased mortality in some developed, and a few developing countries. Worldwide over one billion people are obese, while in the United States 35% of people are obese, leading to this being described as an "obesity epidemic." Obesity is caused by consuming more calories than are expended, so excessive weight gain is usually caused by an energy-dense diet.
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").