The Face Pull is a very simple and effective exercise to work the rear deltoids. In Calisthenics this can be a very useful because we find similar movement pattern in important exercises such as the Pull Up upper part.
This exercise can be performed by using a cable, a band or even lying down and using some weight. In this case we will be using a band, as it's the most common equipment to have among calisthenics athletes.
We would recommend not to use a very strong band in this exercise won't allow you to pull very hard. In the video example, I will be using a single band for both arms, but you can use one band for each arm if available.