New to this forum. I just started to use the smartvest. I have bronchiectasis. Recently diagnosed back in Dec 2019. Took two years to discover this illness. But any way, hi. My name is Mikel. Funny incident with the smartvest. During the first few treatments. I set the machine up on 85%. Yes it was shaking the cheap out of me. The machine have me vertigo. Learn my lesson. Start low. I initially had fun with the higher setting. Signing and making strange sounds to my dog who was amused by my silliness. But getting vertigo was not nice. Anyway hope everyone gets better.