Since wearing my bio flow strap the pain in my arm disappeared I've had the pain in the top of my left arm for approx six weeks and diagnosed over the phone by my local medical center due to covid.try different medication nothing work.then I remembered years ago I used a bracelet I purchased at a local gamefair to help with tennis elbow.walking around the fair took at least five hours at the end of it there wasn't any mor discomfort in my elbow.after five years the bracelet strap broke and I never replaced it.after no relief from the normal medication I sent for a new bracelet.i really don't know why but within 36 hours the pain subsidid.also it helped with the swelling in my hands due to arthritis.all in all I wear it on my left wrist and it gives me I believe relief.