Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to use an elliptical machine [title] Step onto the machine facing the monitor. [step] Be careful stepping onto the machine. The pedals may start to move as you do and it can be easy to lose your balance.

Ending1: It is up to you how to move your feet. However, you can slow down as you begin to get used to the machine and how your feet are held. Ending2: Try to be in an upright position (not on your back) instead. [substeps] You may be leaning forward and can spin however you please but putting both feet on the pedals can cause as much damage as falling off the machine, including ruining your race. Ending3: Grab the handlebars as you step on to help you stay balanced. [title] Begin pedaling to turn it on. Ending4: Move onto the machine as if you are on either crutches or climbing up onto a stationary bike. [substeps] You may find the pedals feel a little too rigid when you learn how to pedal on them.

Answer format: ending1/ending2/ending3/ending4