Walking after a run so it cools you down. stretching. light intensity work out such as relaxed jog. light weight lifting. basically anything light intensity is good
The only one that would make sense not doing is breathing in slowly because you want the medicine to go in quickly to the airways and not get stuck in your mouth.
Don't rush for shots.
Don't run backwards during lobs.
Avoid pickleball elbow.
Wear the right shoes.
Pay attention to your body.
Communicate with other players.
Can you be more detailed with the question?