Own a pet
Eat better food
Eat less often
Activate your longevity defenses by applying “gentle” stressors, that won’t possibly do any damage, like hot/cold shower, short high intense exercises, intermediate fasting.
I like to learn from the work of David Sinclair, a professor in the Department of Genetics and co-director of the Paul F. Glenn Center for the Biology of Aging at Harvard Medical School
If you would like to follow his research, here is a link