This is a wonderful exercise machine. It has some great features that help you train and work yourself up to a harder level, depending on your heart rate. It shows calorie count and also how many fat calories burned. I've been using my "lifestyler" treadmill for several months now and really like the ability to not have to go jogging or walking in the bitter cold. Because this particular model is a trainer, I have worked my way up to a faster pace within just a couple of weeks. I started out at a walking pace at about 3 miles an hour and have worked myself up to 4.3 miles per hour. I have already recommended this treadmill to my mother and some of my friends because since having mine and noticing an improvement in my stamina, I think more people should be *treadmilling.* Is that even a word? LOL The only con I have about it is it is a bit loud when running it, but other than that, it is great! Four stars.