Note that it is not necessary to use exercise machines generally used for aerobic training , like:
treadmill, elliptical trainer, and stationary bike ( and maybe indoor rower).
It is possible to use any exercise machine, including machines rarely used for aerobics and usually used for
strength training.
You take a weight that is relatively low( in contrast to strength training where you set a high weight)
and do lots and lots of consecutive repetitions.