warmup

/ˈwɔrmˌʌp/
noun
  1. A period or set of exercises done before physical activity to prepare the body.
    • A good warmup helps prevent injuries.
    • She did a five-minute warmup before her run.
    • The coach led the team through a warmup before the game.
  2. A preliminary activity or event that prepares for a main event.
    • They held a practice session as a warmup for the competition.
    • The debate served as a warmup for the election campaign.
    • The opening band was a warmup for the main act.