After retirement, taught myself to figure skate, required extensive use of my ju-jutsu falling techniques. Ice is much harder than gym mats

Proved that good technique work!!!! Still skating several times a week.
Learned Argentine Tango, Lindy hop, East coast swing. Doing weekly daces of the stuff.
Fits well into the "whaddaya do all day"
Took French Music, language, culture classes at local college, discovered the miserable teaching skills and knowledge breadth of newly minted soft core Phd's. Ex. One music Phd dude was clueless on the fact that harpsicord is a plucked instrument, and that pianos have hammered strings. Even beyond, that grand pianos hammer from the bottom up and uprights hammer the strings from front to back as the string are vertical. And on and on, regarding musiciancs they claimed were French, who in fact wre Belgian, Italian, American and so forth... Yecch..... Basketweavers.
Another, they spent two whole classes of a semester on the Hamilton play, duh, .... Hamilton was Jamaican, nothing to do with French anything. The play was about American politics , duh.....
Having spent nearly 15 years of my youth working with and for Phds in the hard sciences, Physics, Geology, Oceanograpy, Marine Biology, Geo-chemistry etc., gained much dislike for the soft Phds.
I'll call that another retirement learning bit.
Hmm, maybe I should have put this in the pet peeve.
Well, Never mind, as Roseanne Rosana Donna would say.