I wrote a book about TENS Units! It's called: Maximum Pain Relief with Your TENS Unit: Easy, Drug-Free Techniques for Treating Chronic Pain, Muscle Injuries, and Common Ailments at Home. I know, that's quite the title Here's a link to purchase it: https://amzn.to/37vOSD4 (affiliate link)

Here's a brief summary of my book:
Pain can hinder every aspect of your life, making even the simplest of tasks unbearable. Instead of constantly taking over-the-counter painkillers or turning to dangerously addictive opioids from your doctor, there is now an easy at-home alternative solution: TENS. Transcutaneous electrical nerve stimulation (TENS) units can decrease acute and chronic pain while significantly reducing, or even eliminating, the need for medication.

From beginners to more advanced users, this book has solutions for everyone. It shows you how TENS and electrical muscle stimulation (EMS) units can be a safe, noninvasive, user-friendly, and inexpensive way to help treat chronic and acute pain. In addition to showing you how to use a TENS/EMS unit and how to properly place the electrodes, it includes some simple stretches and exercises that can be done in conjunction with the TENS unit to get the best possible results long-term.

This book has tips, techniques, and step-by-step color photos to help you get the most out of your TENS unit. It also includes electrode placements and stretches/exercises for a wide variety of injuries and ailments throughout the body, including:
Upper and Lower Back Pain
Knee Pain and Weakness
Neck and Shoulder Tightness
Hamstring and Calf Strains
Fibromyalgia
Peripheral Neuropathy
Tension Headaches
... and many more!

Where Can I Order Your Book?
My book is available at many online retailers. Here's a link to it on Amazon: https://amzn.to/37vOSD4 (affiliate link)

Will You Recommend a Great TENS Unit to Go with Your Book?
Check out my "Best TENS Unit & Reviews" blog post here: https://www.askdoctorjo.com/best-tens-unit where I talk about some of the things you may want to consider when purchasing the perfect TENS Unit for you.