Hi John, it's definitely a sensation to get used to. For a month or so, I started slow on the lower levels - now I use the bone density building programs #7,8, and 9 at least once a day, sometimes twice. I don't attempt any exercises on it - I'd rather do them on solid ground. I just stand on the BOLT and watch tv for the duration of the programs, 15 minutes. There were so many vibration machines on Amazon, that I reviewed them over and over until I found the right one for me. Good luck!