I like this product because I believe it has strengthened my bones. Since I am 79 years old and female, I can't do all the weight resistant exercises I did when I was younger; but I go 3 times a week to the gym. I feel good that I can do the plank for 70 seconds. I also use the 5, 8, and 10 lb. dumbbells for some exercises plus some of their weight training machines. Last February I tripped over one of those speed bumps; however, I was able to get up (in spite of falling on my face) finish my business. I don't think that would have been possible had I not been taking Strontium found in this formula as well as working out regularly. I believe it is essential to keep on moving and I would like to think your product helps in this regard.