Strong Bones is researched proven 12 week strength training class is for men and women middle-aged and older. Research shows that strength training will improve bone density, reduce falls, improve arthritis symptoms, increase flexibility and improve mood and confidence levels. The class meets twice a week for 12 weeks.
See https://www.co.winnebago.wi.us/health/divisions-program-areas/your-health/adult/healthy-aging for locations and class schedule.