If you’re looking to start a workout on your iPhone without the help of an Apple Watch, there are a few ways to do so. One way is to use the Workout app. This app is available on both the iPhone and iPad, and it allows you to create and track workouts with ease. Another option is to use the Health app. This app is available on both the iPhone and iPad, and it allows you to track your health data as well as your workouts. Finally, you can use a third-party fitness tracker such as Fitbit or Garmin.