''Black Hole Training'' is named for its incredible power to transform. like being pulled into a black hole and coming out the other side, those who complete it return with a new perspective on life. it's the world's hardest training, with 10 intense chapters that push you to the limit. created by CHERRY SIN , Also known as a hybrid monk, in the Himalayas when he was just 15 years old, this program was inspired by his deep connection with nature.