When looking for an elliptical trainer that allows you adjust the stride length to suit your own body as your gym... and get started on your own personal fitness journey today!For more and more exercise enthusiasts are turning to recumbent seating instead. A recumbent exercise bike allows you to sit in a slightly reclined position, place less stress on the back and knees but tend to cost more. Some people find the position and motion uncomfortable if they are used to traditional bike riding. Leg Crunches are similar to the Bicycle, but with crunches, your torso does most of the movement. Lie on the mat again with your lower back pressed flat. Place your hands at your sides or by your head, whichever is more comfortable. Be sure not to put any pressure on your arms or you will take away from the effectiveness of the exercise. Some elliptical machines fold up to save space when not in use. They generally fall in the mid to higher price range compared to other types of fitness equipment, their effectiveness