The manufacturer supports its claims by offering a 60-day money-back guarantee for those not completely satisfied. What all of them have in common is that they are not only using the device passively but trying to live an active life and focusing on diet and lifestyle modifications. But Slendertone’s technology and claims stood to the test and they are careful to say that their device is made for body toning, which is exactly what EMS technology is good at. Otherwise referred to as EMS, this process is something that will be able to help firm and tone muscles by penetrating the skin and causing the ab muscles to contract (in the exact same way they would during a core workout), and this is the main appeal of Slendertone. The Slendertone tightens the appearance of your abdominal muscles, helping with appearance, posture, back issues, and ability to remain standing for longer periods as your level of fitness increases.

Journal of Rehabilitation and Assistive Technologies Engineering: “The safety of electrical stimulation in patients with pacemakers and implantable cardioverter defibrillators: A systematic review. The other advantage is you can pull the control unit out of the belt to make any adjustments – and check what you’re doing on the LCD screen.The programmes on this model are slightly different to the Abs8 and they feature 7 passive and 3 active presets. A more recent study, which was also small, found that electronic muscle stimulation didn’t significantly change trained athletes’ abdominal muscles. You can read more about this in my full review, where we got hold of one of these belts and tasted it for ourselves. Note that the manual indicates that users should get a doctor’s permission before using the Flex Belt.

Using this ab belt 30 minutes a day for a minimum of 5 days a week is an alternative way to get the job done. That’s why Slendertone has also created a muscle trainer for the arms, specially designed to target biceps and triceps muscles. Plus, if you consider the wireless compatibility useless or not worth the investment, this is one of the best standard options in the Slendertone family.After turning on the device, you will feel a tingling sensation and then muscle contractions, but it is not uncomfortable, and it is long enough for larger users. Similar to the above, this Slendertone model uses Electrical Muscle Stimulation (EMS) to activate all the muscles in your abdominal area, it is unisex, and the recommended use is 30 minutes a day for at least 5 days a week. Of course, we apply the usual caveats here – if you have a lot of body fat then you are not going to reveal abs, but they will get toned.