It depends on the embassy if they approve it. Yoga can be used as part of a medical treatment program. Yoga for basic health/fun will unlikely get approved.
"can work in Thailand remotely" was used in my application. I get the difference you are highlighting, not sure if an embassy is going to be that strict in refusal though. More likely to request an interview to clarify.
Anonymous participant You can take cooking classes under the Softpower option of the DTV. Many SPers will work online for non Thai companies. Online work for non Thai companies is not really considered employment so it it is tolerated althought best to keep it on the DL on retirement, non o etc visas