The AB Coaster Max is suitable for cardio exercise and burning calories, especially burning belly fat. It helps in trimming the tummy and flattening the tummy. It can be also used to get a big buttock. This can be used has your only abdominal/core exercise machine . The seat disengages allowing the user to twist from side to side during the ride thus hitting the waistline as well. The whole family can use it. It's Safe to use, no pulling on the neck etc.