An exercise bike takes no training and is easy to use, although it can be uncomfortable for long stints. While riding isn’t as effective in preventing osteoporosis as weight-bearing exercise, it does provide an excellent cardiovascular workout. Look for a model with a comfortable, adjustable seat and toe clips. If the seat is too hard, find out if you can replace the seat with a cushioned model bought separately.
These machines provide a low-impact workout that approximates climbing flights of stairs, some modes have levers with handgrips to work arms, too. Beginners may find stepper machines strenuous, and the motion can be hard on the knees. Look for machines that provide independent foot action and are equipped with handrails and large stair platforms.
Rowing machines work the back, arms, and legs simultaneously, offering as close to a total-body workout as available from a machine. Unless you’re used to rowing, the motion initially may feel unfamiliar, and some people find it hard on the back. When purchasing one, consider pulley models instead of piston models for a more realistic rowing experience.
These machines provide a circular up-and-down motion that’s a cross between a ski machine and a stair-stepper. They provide a nearly impact-free workout, which is easy on the joints. Resistance and grade can be adjusted automatically or manually on some models, and levers with handgrips to work the upper body may be available. It may take a little while to get used to the unusual motion, look for comfortable handlebars and nonslip pedals with curved ridges. Try the machine out at varying speeds and grades to make sure it feels stable.