An muscle-stimulating TENS unit

According to Megan Steele, a physical therapist, professor and pain science researcher, TENS units — which stands for Transcutaneous Electrical Nerve Stimulation — deliver electrical impulses that may help modulate pain perception. The theory behind TENS units is that they stimulate the superficial nerves in the body that exhaust some of the pain fibers that typically cause discomfort around a joint.

This model is relatively affordable, has over 81,450 5-star Amazon ratings and features five therapy modes of custom stimulation. The attachments can adhere to areas like the back and shoulders to reduce pain.

$38.88 AT AMAZON