Yes and no. If too young and not mentally matured the student
might not be able to grasp the theoretical parts which are
crucial for a sound understanding of the system and its
application. If too old, the mind and body might be too set in
certain ways which have been reinforced throughout many
years/decades and it can become quite challenging to un-learn
certain bad habits (body mechanics in particular, but also
mental aspects), but of course there are always exceptions to
regarding this potential issue.