I use the Smart Vest and have been using it diligently for about 1 1/2 years. I love it, to tell y'all the truth. I use the time to read and relax. If I secure it too tightly, yes, it can hurt. If that happens, I pause it, loosen the tabs just a bit and then restart it. I'm not familiar with VibaLung. sounds interesting. Do they work in a similar fashion?? Everyone keep safe. Personally, I'm home and don't go out anywhere except to take myself for a drive once in awhile. Just me, myself and I in my car. Blessings to everyone ! Toni