2. Exercise for recent fitness recruits—people who are learning for the first time about the benefits of strength, flexibility and balance training.
3. Exercise involving gardening, cycling, walking and working on conservation projects in an outdoor setting.
4. Exercise that involves forward movement, such as running (green light), versus exercise that involves standing stationary, such as lifting weights (red light).
The answer is number 3. According to Dr. Andrew Weil’s newsletter, Self Healing (May 2008), green exercise involves being active outdoors. Dr. Weil, along with other experts, encourages people to turn off their television and go outdoors. By exercising outdoors, individuals reconnect with nature, benefiting both body and spirit.