My husband noticed his tinnitus in his ear(s) wasn't as bad and we both noticed an increase in physical energy, felt less tired, were "happier," and just felt better after only a one-hour session. We bought the $600 canister(s) to take home with us. I noticed I slept deeper and better with the canister nearby at night. Some people like myself, get "chronic fatigue" after being around mRNA vaxxed medical staff and it happened to me three times. The last time I had the canister on my lap when getting my teeth cleaned by a "v" person, the next day, I didn't have any fatigue issues like I did before. I think some people are just more sensitive to noticing the frequency changes around the biohealers than others, so there isn't any right or wrong. There is a lady named Shari Raye on beforeitsnews.com who says she bought 2-4 of the adult generators and uses them day and night. She had to decrease her AFIB hert meds after being around the generators due to her life force energy having been increased. Again, everyone could have different responses from the generators but we're very happy with the canisters we bought.