A tribal doctor offers daily exercises that are considered to protect children from evil spirits, improve their health and prolong life. The exercises have rejuvenating and refreshing effects, they make the body feel very light and relaxed afterwards.
Children start to engage in mild stretching since birth and more advanced stretching since the age of about four. When they reach their teen years, they also start using their back flexibility to participate in ritual dances believed to bring fortune to the whole village.
Girls drop the exercises when they first get pregnant which often happens during their late teen years. Male youths usually keep exercising until the age of thirty and more. They use stretching to improve their agility and luck before going on a hunt, or to relax their back after a day of hard work, depending on their speciality within the tribe.