I feel you all, recently I'm struggling with muscles and tendons after tennis session. Once upon time I really trained hard, there wasn't any single day I did not do something, running, cycling, gym, swimming all the time and my body was used to it. Within time and some breaks caused by health disorders when I came back to sport activity I'm struggling with my body and can not understand it and for sure to deal with it

.After every 2nd training session something pops up. Last Sunday early morning after the breakfast I started feeling pain at the back below the shoulder blade (left). 1st thought wtf!!?! 2nd thought maybe it kidney (I suffer from kidneys stones and after my last ultrasound exam. there is 1 small stone and thought maybe this is it). But after 3rd thought, no the pain is to high and appears when I bend/twist. Then I recalled... hmmm on Friday with my coach I tried to adjust my FH top spin strokes to be more deadly with more body rotations, weigh transfer to have a real power..... and noooooo it's impossible it was on Friday, if it was the case I should have felt the pain on Saturday not on Sunday.... but it was true

Bengay warming ointment, hot bath on Sunday, Monday, everything has gone.
Last Tuesday training, was really hard, was cold but who cares

2 hours session when I was coming back to home, I started feeling pain in my wrist on the wheel when was driving car.... No, this isn't really happening!!!WTF!?!?!
Wednesday, went to orthopedist (sports doctor) and was telling the story (describing everything) .... he started smiling, Dear Sir (he said), I also play table tennis and know the wrist moves. You are 44!!! and train with teenagers, is cold now, maybe you did not warm up properly, hit few times too strong and overload your wrist tendons.
He suggested to take dietary supplement for tendons with collagen and other additives, ointment, to rest until the end of this week (w/o training), do some exercises strengthening my wrist.
It is really sad and I can't digest it now.
If you are older, warm ups, stretching, strengthening your muscles and tendons is more important than you were younger and recovery was twice or even more faster!!!! It is sad but true.