Absolutely.
Ugh, I’m not disagreeing with you, Eli, but I should just stop answering the “permanent changes” questions because, as the big Permanent vs. Non-permanent fields MEGA-THREAD showed us, there are so many different, individual ways to define “permanent.”
Yes, any physical changes produced by these fields will likely last over some period of time, just like muscle gains from the workout fields will likely last over a period of time when those fields are stopped.
And “real life” will continue to exact its toll (as it does) on the 3 Treasures. Without these fields to rebalance, restore and nurture our levels of the 3 Treasures, our alchemy (and eventually our physical bodies) will be affected.
I agree.