Volunteering is a great way to stay physically and mentally active in retirement. Giving your time to a cause alongside others can build friendships and create a sense of community. There is no shortage of volunteer opportunities for retirees wanting to help their communities thrive. Libraries, animal shelters, food banks, and recreation centers are often in need of volunteers to minimize costs, care for their customers, and provide programming. A call to your local chamber of commerce or a look at volunteermatch.org are easy ways to find out about new opportunities.