Days when I feel particularly stiff and useless I can console myself that I can still move smoothly and quickly [for my age] and that aspects of what I practise and teach are getting better [for my age]. Perhaps it's a shame in a way that anyone has to learn from a young master as the best of those will only improve with age and martial maturity so that his or her later students are more likely to get deeper instruction than their first such.
Conversely, older teachers like me, are less able physically and so don't become much of a challenge for the young and vigorous once they have past the essential stage of being beginners where all skills seem exotic and not just the products of hard work and long-term effort under the supervision of a competent instructor.
I will end by repeating the advice given to me by one of my teachers some twenty years ago "you should train to live well and you shouldn't just live to train". I would add that this is true no matter what your age and no matter what the activity! It's too easy to take any activity too lightly or too obsessively.
A most Happy & Healthy Winter Solstice/Yule to all today and a Merry Christmas in a few days time.
Copyright Michael A. Babin ©2018