My fathers doctor recommended if i could afford to do so get a pulse machine, vibration machine and a light therapy machine he also recommended this brand specifically so i got the stand and biomax900 for my fathers lung disease alpha one antitrypsin and so far i think hes showing signs ofdoing better though it is hard to Guage because i also got him stem cells and abunch of peptides you name it and were doing all of them at the same time but the science is sound and doc recommends it now im using it during work outs and i can tell i feel more amped so more energy then normal when im lifting or doing calisthenics in any case i consider it a good buy for my father as well as my own health, i have no way of measuring any results accurately however it seems to be working