Regarding the 4 physical fields question (see also the updated part):
Roughly said, these are mostly about fields that aim at more drastic changes (Facial Symmetry, etc.).
I’d suggest you check posts by especially PatronSaintofBiceps and Zen for those matters (you can use the Advanced Search bar and type their names).
I’m not really a sportive folk (just doing the strict minimum to stay in shape) nor have intensive work shifts since a while but here are the free audios that I use after physical effort or muscle pain, usually in this order:
Muscle Recovery v2 (from the Plasma Brothers album)
Induced Follistatin to Muscle (from Album 4). It also has some regenerative properties, as discussed in some articles and members in here.
Spa Days album, especially Muscle Massage
Acupressure
Neck Hump, Reversal and Reduction
Spinal Tapper
Tracks 1 and 3 of the Beautiful Beasties album. Not so strangely enough, they make me feel rested, as already shared in the related thread some months ago. But that’s just me.
Some other paid fields like Microkinesi-Therapist and Acu-Automaton would help as well. The same goes for Utter Relaxation, Pain Control, etc.