I purchased the treadmill while pregnant and used it to walk on. Now that I've delivered, I run on the treadmill.  It is easy on the knees and very easy to use. I haven't read the manual yet to figure out all the different programs, but it is nice to know there are many different options.  The deck size is great!  Plenty big.  For not having read the manual, it's still easy enough to use.  I haven't folded it up yet, so I don't know if that is easy.  But it's still a nice option to have.  Overall, I recommend this treadmill.