@type category() ::
  :stretching
  | :foam_rolling
  | :massage
  | :cold_therapy
  | :heat_therapy
  | :sleep
  | String.t()

@type t() :: %WplAi.AST.Recovery{
  category: category(),
  duration: Duration.t(),
  exercises: [RecoveryExercise.t()] | nil,
  meta: map()
}