This is a special class for those who are new to PHB. This class will enable participants to measure their progress in strength, balance, and knowledge of bone health over 24 weeks. The first class is an orientation and introduction to the program. Classes will include brief 10-minute discussions of exercise, osteoporosis, nutrition, fall prevention, and safe movement. Must attend the first orientation class in order to join the 24-week class and must attend 18 of the 24 classes. Participants must purchase a program manual in class ($10), ankle cuffs ($17 for 5-lb cuff.) Bring hand weights. Medical approval required to participate on the first day of orientation. Medical form can be picked up at SYLS office.