Have a stretching regimen, watch your posture, change your position often during work (I do so even in a chair), and do some decent physical activity that invol

Have a stretching regimen, watch your posture, change your position often during work (I do so even in a chair), and do some decent physical activity that involves your back. Gardening is a popular one that keeps seniors structurally sound. Volunteer work, tinkering with cars, handymanning around the house, taking care of lingering projects like that can really help and have more benefits than just moving weights back and forth. However, the latter is also pretty simple if you can keep yourself doing it regularly.