Simplify the following text for a Grade 15 native English-speaking person.
Original: Some forms of Christianity ( see especially : Monastic life ) and the Indian religions ( including yoga ) teach salvation and liberation and involve a process of mind-body transformation effected by exercising restraint with respect to actions of body , speech , and mind .
Simplified: Christianity and the Indian religions ( including yoga ) teach that salvation and liberation involve a process of mind-body transformation that is done through practicing restraint with respect to actions of body , speech and mind .