Book excerpt: Tips, Techniques, and Step-by-Step Color Photos to Get the Most Out of Your TENS Unit Pain can hinder every aspect of your life, making even the simplest of tasks unbearable. Instead of endlessly ingesting only partially effective over-the-counter painkillers or turning to dangerously addictive opioids from your doctor, there is now a powerful 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. For beginners to more advanced users, this book has solutions for everyone. It offers not only an overview of how the units work, but also how to properly place the electrodes and how much power to use to get the best results for various injuries and ailments throughout the body, including: Upper and Lower Back Pain Neck and Shoulder Tightness Hamstring and Calf Strains Fibromyalgia Peripheral Neuropathy Tension Headaches