I am 75 years old, and for a woman my age, I am in excellent health, don't have a weight problem, and in good condition physically. I have had a persistent problem with my knees and legs for a few years that have gotten worse as I age. The problem has been that my knees and legs feel shaky when going down stairs and I sometimes get shots of pain in my knees when going down stairs - especially if I am carrying any kind of weight.A couple of years ago, my bone density tests showed mild osteoporosis which has improved the last couple of years because of the lifting I do in growing veggies in my basement. My doctor told me that daily lifting the weight I do has helped with this, but my legs and hips still needed some improvement. I knew this since I was experiences a lot of aches in both my hips and sometimes in my back.We had bought a couple of other exercise machines, but they required numerous adjustments and almost taking the machine apart and putting it back together for each exercise. When it's so much work to adjust a machine to use it, you tend not to use it. The benefits of any machine don't work by osmosis. You have to use them on a regular basis.For me, I don't want to lose weight or even inches. I simply wanted my legs, hips and back to get stronger and to build my bone density in these areas. I have had this machine for only a short time, but I can already feel the benefits of using it. In less than a week, my knees no longer feel shaky nor have I had any pains in my knees when going downstairs. In fact, my legs actually feel stronger than they did before using this machine. Considering my available daily time, I really don't have a lot of time to devote to exercising, but I have been diligent in doing 25 squat reps per day for the last week, and have felt an improvement in my leg and knee strength in that time.There are a number of videos on YouTube for various exercises that help with both upper and lower body muscle development. What I love about this machine is that once you set the seat and handle to your desired setting, you never have to change anything else other than the resistance. Each cable adds 22 lbs. of resistance, so you can increase the resistance as you get stronger. I started with on cable of 22 lbs., so I really felt the "burn" at 20 reps but pushed to 25 reps.Since I have had this machine a short time, this review will be a work in progress. I will definitely update the review as I have had it longer, and will also update it when I get the results of my next bone density test. In my opinion, we all get older, but we can slow the aging process and don't have to accept it.UPDATE 7/11/22:I have been using this exerciser for about 2 weeks, and have missed using it only one day. I have had to force myself to use it every day especially when I was already tired. I am still doing 25-28 reps even though it starts to hurt after 22 reps. Hopefully, I can do more reps in time, and even add one strap for another 22 pounds of resistance. Although I can honestly say exercising is not my idea of a really good time, I am happy with the results I have been experiencing. My legs are getting stronger, and I no longer have any back or hip aches - even after carrying multiple watering cans of water to water my basement garden. I am looking forward to my next bone density tests to find out if this exercise has caused improvement.UPDATE 9/01/22:I have had this exerciser for a little over 2 months. The first 3 weeks, I made a point to do 25 reps every evening. Since then, I use this exerciser at least 5 days a week, and now usually do 30 reps. My legs are definitely getting stronger as they no longer feel shaky when going down stairs. The aches in my back and hips have been gone since the second week of using this machine. Admittedly, exercising at 1 am, which is when I do it after working in my basement garden, I usually have to force myself to do it. It's all too easy to not do it because I don't feel like it - I never feel like doing the exercise. I make myself continue because it is building my strength and, hopefully, increasing my bone density.My Mom lived to almost 101 years, and when everyone wanted to leave her in a wheelchair, we encouraged her, and helped her, to walk. I believe this helped her to live longer. I am hoping to remain mobile for as long, or longer, than my mother. I do believe that what we do now to maintain our health can increase our lives and quality of life as we get older.I hope this review was helpful for you.