Tree for All teaches the protocols of Tree Climbers International. In the history of the sport, no serious injury has occurred by strictly adhering to these rules and techniques. The sport, initiated in Atlanta, is now of international scope with instructors practicing across the USA and in Australia, Japan, Taiwan, Italy, France, Poland, Chile and England.
Research indicates nature and outdoor activities have restorative and therapeutic benefits. Recent research in Japan suggests that recreational tree climbers are more relaxed after climbing and further revealed that "the sport results in increased vitality and a reduction in confusion, fatigue and tension." Recreational tree climbing as a beneficial therapy to specific populations continues under study.