@type cardio_type() :: :continuous | :intervals | :fartlek

@type t() :: %WplAi.AST.Cardio{
  cardio_type: cardio_type(),
  intensity: Intensity.t() | nil,
  intervals: IntervalPattern.t() | nil,
  meta: map(),
  modality: String.t(),
  total_duration: Duration.t(),
  zone: integer() | nil
}