What is the age range for learning the method?
Some children as young as 3 or 4 can learn the method – but parents need to be present for such training. For infants, either or both of the parents learn the method for themselves and are given specific advice regarding their young children. Even people of up to 90 y.o. can get value from learning the method. Older people may need to practise more – but they usually have more time.
