Introducing the TENSION TONER At-Home Workout Fitness Bar. Resistance bands are a good alternative to dumbbell exercises. The problem is that resistance bands quickly lose tension during the lowering phase of the workout. That’s where TENSION TONER comes in. It’s a travel-sized workout bar with built-in resistance. The bars are designed for you to keep separated under tension, which multitasks your muscles for an optimal workout. As a result, you get incredible muscle activation during every exercise, allowing you to do more in less time. Plus, it’s super light and compact so you can take it with you on vacation or work trips. The TENSION TONER offers a total muscle approach to every workout. No matter the exercise, the TENSION TONER gives you double the workout in just half the time.