I ended up sending mine back. After a few sessions, I couldn’t get into it. It was way too different from actually swimming and I get a better workout in actually in the water. It sucks that I had to pay 600$ to merely try the machine for a month… Be warned that the shipping is stupid, so if you buy one, you better make sure you want it. IMO, vasa’s are way overhyped for the majority of swimmers.