If you do not already own an ANT+ compatible heart rate monitor, you may purchase the Peloton heart rate monitor.
If you are not using a Peloton heart rate monitor, you can check whether your heart monitor is ANT+ by using the following link: http://www.thisisant.com/directory. Once you are on the site, choose the "heart rate monitor" filter under the Categories section that you'll see on the left-hand side of the page.
If you are looking to purchase a particular heart rate monitor and have any questions about it, please feel free to write in to firstname.lastname@example.org. We will gladly check around to see if any of our staff has experience with that particular brand or model to help give you the best idea of the product.
If you own a heart rate monitor that is ANT+ compatible, the metric for your heart rate will automatically appear on the lower right hand of your screen as long as your heart rate monitor is on prior to starting the class. To make sure your heart rate monitor is on, make sure the sensors on your HRM are lightly wet (with water or sweat) before placing the leads on your chest.