Describe a non-pharmacological life experience that was so thrilling to you that you felt completely euphoric. Discuss your responses in terms of endorphin release in the brain. Is there an evolutionary advantage to having increased levels of endorphin activity at certain points in our lives? What would be the advantage of having vivid memories of such experiences? To be perfectly clear, this is to be a non-drug-related life experience. Think of feeling "high on life", if you will. For instance, running the last leg of a big race, winning an award, bowling a perfect game, bungee-jumping off a rock canyon, that feeling of being on vacation, and feeling wonderful and alive in a new place, etc.