A. 1. Use a separate timer app on your iPhone that can run in the background while you use the Sweat app. Open the timer app, set your desired time, and then switch back to the Sweat app. 2. Alternatively, you can use a physical timer or stopwatch to keep track of your intervals while using the app.

B. 3. If you prefer to use the Sweat app's timer, consider planning your workouts in a way that allows you to keep the app open, such as using a stand or holder for your phone.