There are some risks of overexertion from using these devices, and the force of using them may pose risk to the mouth and teeth. The devices may also be unnecessary for most people, as the jaw gets plenty of exercise from daily activities, such as chewing and talking.

Is a jawline exerciser safe?

Despite the claims of the JawlineMe Fitness Ball, you are unlikely to be able to tone your jawline with exercise. Plus, the exerciser has the potential to cause damage to your jaw joints. This exerciser is not a good alternative to a nonsurgical facelift.

Is Jawzrsize bad for your teeth?

With the cushioning of the Jawzrsize unit, you won't damage your teeth, but there's nothing protecting your jaw joints. It is a mistake to believe that too-weak muscles are causing your TMJ. In fact, it's common for people with TMJ to have overdeveloped jaw muscles.