I have veiwed many sites and excercise programs for bones. I feel that PT Margaret Martins Melio Guide program is great - it is based on saftey and years of working with our population ( old, elderly as well as young strong and premensopaual) Her program offers various levels but her 'basics' are well worth reveiwing for many of us assume we know things but can find that indeed they are risky for our bone health. She has both a book as well as practice videos. There is a 8 day sample practice to try if you want to see how she works. SHe also offers webinares on medications if you need more support. Personally she is great and kind and supportive person and if you shoose to work with her indiviualy ( via on line connection) you will find her to be wonderful . My best to you and your health.