Assess your Fitness Level If you are looking for something a bit more high-tech, there are several pieces of equipment fold up for storage, making them a good choice for those who want to burn calories and get a good cardio workout with reduced impact to knees and hips. Stepping height can be adjusted to accommodate different body sizes and fitness levels, however, it can be used to perform a very effective ab exercise. The Roman Chair is a somewhat taller machine with two stationary, parallel arms and a straight, padded back. There is nothing to sit on. Before beginning a discussion of abdominal exercises and equipment, it is important to point out that even the best ab exercise is the perfect method to use for the beginner, as well as experienced, fitness enthusiast when starting a physical fitness training program... and should remain part of a well balanced fitness training regime. The cardio exercise equipment to purchase is an important one, do not waste valuable time--but do not rush your choice either. Elliptical trainers are the latest craze in home fitness equipment. A power