There are various exercise machines that are good for abdominal exercises. Yoga balls are good for your stomach, you should first know how to use a yoga ball properly though for abdominal exercises....
Most are most like Bo Flex are not trusted. Try some old fashioned running up and down stairs for your legs and try lifting yourself on a tree branch for your arms and abs.I will also add up to a...
The Gazelle Freestyle Elliptical Trainer can be found at walmart for $197. Other models cost a little less - such as the Tony Little Gazelle Edge Fitness System, which can be found at Target for $99....