Participate in a spiritual community Healthy centenarians everywhere have faith. The Sardinians and Nicoyans are mostly Catholic. Okinawans have a blended religion that stresses ancestor worship. Loma Linda centenarians are Seventh-day Adventists. Ikarians have traditionally been Greek Orthodox. All belong to strong religious communities. The simple act of worship is one of those subtly powerful habits that seems to improve your chances of having more good years. It doesn’t matter if you are Muslim, Christian, Jewish, Buddhist, or Hindu.