Participants were asked to add an extra 30 minutes of exercise to their daily routine. Some of the suggested activities included brisk walking, swimming, jumping rope or other moderate exercise activities.

Read here about their thoughts on adding in 30 minutes of exercise. Also included is commentary from Sam Von Gillern, a graduate student who teaches an honors seminar about positive psychology.

To follow along: During week four, participants will commit three random conscious acts of kindness each day. If you would like to follow along, try offering unique compliments, buying someone a coffee or writing a nice letter to someone.