Yes you read the title correctly. I have indeed performed indoor swimming without water. You ask how? Well its simple, I put my googles and swim cap on, and did exactly as Michael Phelps would do. I mean the guy has 28 gold medals for a reason, who else would I replicate. I will attach the videos below, but leave you with this. The post is related to water, but there is no water. In this scenario my mind imagined that it was in a swimming pool, and my body did the rest.