Goplus Core & Abdominal Trainers, Twister Trainer Ab Exercise Machine Height Adjustable Incline Workout Equipment Ab Rocket Exerciser

The Goplus Core & Abdominal Trainers is an easy-to-use exercise machine that can provide a good workout for the abs and even message the back. The machine stays firmly planted on its base while moving with spring tension at its fulcrum. It is also adjustable for different levels of angles to give a variety of workout intensities. The seat slides slightly forward when the back moves downward with resistance tension. The equipment comes mostly assembled, with just the handlebars and two other pieces needing to be put on. One customer has reported the spring breaking after four months of use. Users have reported varying levels of effectiveness in targeting the abs, with some experiencing tighter and toned stomachs while others feel no effect. The machine has also been reported to be uncomfortable, particularly for taller people, and lacking upper back and neck support. However, it is praised for being easy to use while watching TV or doing something relaxing and providing a good workout for the abs. The machine is sturdily built and arrived promptly.