After facing irreversible 80% nerve damage from chemo-induced peripheral neuropathy CIPN in both feet (2x cancer survivor) - 40 Hz is a healing frequency, Do 20 slow squats on Rumblex - try also with 40 Hz binaural music through headphones, free on YouTube, to achieve Whole Body Vibration WBV & meditation - my disabilities in my legs disappear temporarily while tuning my muscles on my Rumblex, through the artificial application of mechanical energy. Helped rebuild my leg muscles after cancer. What a Godsend. Thank you. 2 times Multiple Myeloma survivor
Have just gotten then Rumblex Plus so just getting started. Seems to be a great product that will be helpful for better health in several ways. Like the different options it offers.