Final answer:
John's good health may be attributed to the beneficial effects of social support, stress management, and possibly healthy behaviors encouraged by his active participation in his church community.
Step-by-step explanation:
The question regards the factors that may have contributed to John's good health due to his long-term active participation in a church community. Examining the links between social support, stress management, and health can shed light on this subject. Strong social networks have been shown to provide emotional support, leading to better health outcomes. This support may also encourage healthy behaviors such as regular exercise and a balanced lifestyle. Furthermore, being an active community member can foster a sense of purpose and belonging, which can reduce stress. Finally, a routine that includes regular community engagement and possibly physical activities associated with church functions can contribute to physical fitness, which is known to help reduce the impact of stress on health.