Heart disease, stroke, diabetes and dementia can all be made less devastating by getting your heart rate up.
Use a device to remind you to get up and stand or take a walk. Your smartphone has a timer, a fitness band will remind you of how many steps you took during the day. Use whatever means you need to break the cycle of sedentary behavior and get moving.
Exercise will help you be a healthier, stronger, and longer-surviving version of yourself.