Finish this sentence.

When you help others, you help yourself. Some people even experience “helper’s high”—energy, inner warmth and calm—a phenomenon first identified by Allan Luks when he surveyed more than a thousand volunteers on the connection between helping and health. Find one small thing you can do for somebody else today.

Allan Luks, “Helper’s High: Volunteering Makes People Feel Good, Physically and Emotionally,” Psychology Today 22 (1988): 34–42.