" The transactional view of psychological stress reminds us that we can be more resistant to stress, more resilient, if we build up our resources and enhance our physical and psychological well-being in general (for example, via regular exercise, meditation, adequate sleep, and the deep connectedness of interpersonal intimacy, to name four of the most important ones) during times when we are not particularly taxed or overwhelmed. This is our biological and psychological “bank account” from which we can withdraw needed resources on some occasions, and to which we can make deposits at other times. This is really what the phrase “healthy lifestyle” implies. "

― Jon Kabat-Zinn , Full Catastrophe Living: Using the Wisdom of Your Body and Mind to Face Stress, Pain, and Illness