22 years ago I worked in a holistic family health practice and had my first experience with using one of these machines. I loved it, used it whenever I could at work and dreamed of one day having one of my own. Back then, they weren't as easy to find and until now they were a bit much for me to spend but as they are now fsa and hsa approved, I ordered one immediately! It shipped the next day, arrived well-packed and is even more sturdy and well-built than the one I used all those years ago. I've been using it twice per day, 15-minute sessions each time, ever since it arrived. I find it deeply relaxing, to the extent that it has helped me with a recent insomnia issue. I also noticed a marked increase in physical output, if you know what I mean, as has my husband. It seems to aid inflammation, flush excess fluid and eases any backache I'm having within moments. I'm working to heal from SIBO and this offers great comfort and honestly seems to have helped with my digestion in general already.Some folks have mentioned their ankles being uncomfortable and I have had that issue as well. I found two ways to combat that; one or two pair of extra thick socks and even used a very thin pillow on top and rested my ankles on that, and it worked well either way. Oddly, some days I feel zero ankle irritation, some days I feel it enough to use one of the aforementioned methods.It's also worth noting that you will experience different sensations and benefits depending upon how your arms are during the session. Try them at your sides, out like a cross and over your head (if that's comfortable). You'll notice a subtle but definite shift in how the movement traverses your body and each position offers unique benefits, so I usually do all three during each session.Don't do it too close to a meal or snack, and be sure to hydrate well afterwards. Start with the slowest setting and see how you do. Honestly, I've never gone above a few settings above that and don't really see the need. Some folks mentioned their knees hurting. Be sure you are positioned correctly, take it slow and certainly use a pillow beneath your knees if need be. My husband has knees which tend towards aching but he hasn't experienced any discomfort using this.Between this little gem, our far-infrared heating pad, TDP lamp and Hypervolt massager we have quite the home wellness setup now and I'm so grateful for that.