One of the best things you can do to prolong your life is exercise, both muscle-building as well as cardiovascular. This was mentioned in the post, but Id like to stress just how crucial this is for a community most likely to die as a result of heart disease (assuming no species-ending disaster).
Both muscle mass and endurance have been proven to be hugely beneficial for prolonging lifespan, so hit the gym bare minimum once a week. (Its also great for mental health and improves thinking and productivity)
Many including me honestly don’t care about prolonged old age for many reasons. But exercise has done amazing things for me.