Your attention please!! You will most probably get more benefit from investing in gymnasium membership and a exercise personal trainer than buying an machine. According to researchers at the Cleavland University it is better to exercise at home or in the gym thatn to buy a machine Exercise machines are often advertised in a misleading way. For instance, they may need careful adjusting before they fit to your body, and you may need to learn certain skills - such as how to isolate a group of muscles - before gaining any benefit.
Hyped up advertisements about abdomen trimmer or tummy trimmer misguide people to buy. According to Professor Rozario one gets better results from spending the money on gym membership instead, and hiring a trainer for a few sessions to learn correct exercise technique. Motivate yourself by working with a friend or buying a new outfit that is just a little snug - then see if you can trim yourself down to fit into it. If you do want to get a machine, keep it simple and go for an exercise bike or treadmill. Both give a good cardiovascular workout and they're easy enough to use properly.