The phrase 'physical necessity' is correct and usable in written English, and it can be used to refer to situations in which something is needed for physical reasons.
For example, "Living in the city is a physical necessity due to her job and proximity to her family."
It is at most a craving, not a physical necessity.
In modern society cannibalism does occasionally occur as the result of extreme physical necessity in isolated surroundings.
In conclusion, the nourishment of centaurs is a laborious process; by physical necessity, they are required to spend three-quarters of their time chewing.
I'm not an extrovert, but I can do a good imitation of one if I'm bolstered by a phalanx of family, or prodded by some urgent physical necessity.
With all the food being served, it soon became apparent that this was going to be not so much an attraction as a physical necessity.
(Leather shoes are a social rather than physical necessity, he wrote, but a necessity nonetheless: anyone would be ashamed to appear in public without them).
The more vigorous perform the physical necessities attendant on heavy drinking and over-eating.
IDENTIFY NEEDS: "Needs" are human emotional or physical necessities and desires.
A psychological theory called Maslow's hierarchy of needs, in which physical necessities like food, health and security trump conceptual needs like self-esteem, may account for people who choose basics over beauty, he said.
This has added resonance in San Francisco, where the economy hinges on the noncorporeal – algorithms, the cloud and the flows of venture capital – yet some 4,500 people sleeping outdoors still struggle each night for the basic physical necessities of existence.
This portrait of a family life consumed by physical necessities is how the non-disabled world sees us – a cliched view that bears no relation to our daily life.
