Knee massager tested 2 weeks: EMS low-frequency heat for stair pain
Heimta Low-Frequency EMS Heat Knee Massager is a home joint-care device that wraps around the knee to deliver EMS stimulation and heat together. After stairs left the front of the knee aching, it was used steadily for 2 weeks, and lying or sitting for about 15 minutes at 38 degrees of heat noticeably eased the stiffness. Worth recommending to anyone put off by a bulky massage chair, or looking for a Chuseok gift for parents.