Annotate and describe the process of the 'Surfing Banana Rolls' exercise and explain what it is beneficial for

Below is a video of Troy, my physical theatre partner, performing the 'banana rolls exercise'. The exercise begins by the performer laying flat on their back with their arms out above their head; supine position. From there, the arms, shoulders, head and legs are lifted just off the ground, so the body is curved to the shape of a banana and only the back touches the ground. From there, the performer should roll onto their side without their arms or legs touching the floor. Once they are on their side, they should keep on rolling in the same direction until they are laying on their front, but still with their arms and legs in  the air; this time, only their stomach and torso should be on the floor. Although this process may be segmented to begin with due to a lack of core strength, with more practices it will become a fluid rolling movement. This process continues in the same direction and can be done back the other way. 

This exercise is beneficial as a warm up exercise to get the body working and the stomach muscles engaged. The exercise involves clenching the stomach muscles tightly to get the body to move, and  I found that to start with, it made my stomach ache but from doing them every day, I can now do them with more ease.

The 'surfing banana rolls' are an extension of the banana rolls demonstrated above. These rolls involve two people, labelled A and B. A lays on the floor in supine position as shown above, on their backs. Person B then lays across them face down to the floor, so their middles are touching and they are in a '+' shape. Person A then begins to roll still with their legs and arms stretched, causing person B to glide over them, a 'surfing' motion. Once Person B has come off the end of Person A, Person B assumes the supine position and begins rolling, whilst Person A lays on top of them and does the surfing motion. It takes a long time, and a lot of trust in one another but eventually the exercise becomes a fluid movement where the transition between each person surfing is smooth.

The 'surfing banana rolls' are good for building up trust in a partnership and for getting an understanding of weight; being comfortable with how much the other person weighs, and knowing you can put all your weight on them without hurting them. Like the banana rolls, it is also good for warming up at the start of a physical theatre session and for engaging the stomach muscles. I found the surfing banana rolls much harder than the banana rolls, because I was with another person and didn't want to hurt them by putting all my weight in them. However, after getting them wrong a few times, I got the hang of how to glide across them and how to keep rigid when rolling so that they can glide across me.