use it or lose it

use it or lose it

If you do not utilize something, usually within a certain timeframe, it will disappear or no longer be viable. Said as an imperative. If you want to stay fit, you need to keep exercising regularly—use it or lose it.
See also: lose, use
Farlex Dictionary of Idioms.
See also:
  • give something a miss
  • give (something) a miss
  • give (something) a pass
  • utilize
  • utilize (someone or something) for (something)
  • utilize for
  • make use of
  • make use of (someone or something)
  • make use of somebody/something
  • put (someone or something) to use