Chapter 4 Chapter 4 Activities to practice this week • Practice altruism: Smile at strangers today. Thank people who help you in stores. Do an unexpectedly nice thing for someone close to you. • Write a brief letter or e-mail to someone you love and send it to them. • Listen to EcoMeditation on your mobile device as you walk, run, or exercise Extended Play Resources • Brain scan videos • The database of energy healing research (click to view database) • Audio interview with EEG neurofeedback expert Judith Pennington (click to listen) • Additional case histories and references