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They have learned that certain frequencies aid us differently.
Fifty years ago they recorded music in 432 hz and most of the music is recorded in 440 hz which has a harsher sound.
Other frequencies...

I like that one.....

“There is only one way to avoid criticism: do nothing, say nothing, and be nothing.”............... Aristotle

Try a yoga class, horseshoes, or badminton.
Twister might be fun.

I wish I had a perfect answer .... but hang in there don't quit.

If you go to the gym, you don't need to have a specific workout routine like experts suggest in a book.
I start out on a treadmill...