Rappelling or abseiling is the process of descending using a controlled rope.  This method is used to descend steep slopes or cliffs which cannot be navigated any other way.  It is used in rock climbing, mountaineering, and now also for rescue operations where a rescuer may be required to descend from a height or an air-craft.

Rappelling is a fairly dangerous sport and requires the participant to be cautious.  It is a strenuous activity hence it promotes physical and mental fitness.  It helps in building confidence, as completing this activity gives the participant a strong sense of achievement.