I've been supplementing with a lot of vitamins despite the evidence that suggests that absorption of supplements is not the same as the ingestion of, for example, fish products to get naturally synthesized omega 3 protein. I've found that a mix of good foods that you enjoy eating, as well as other dietary changes mentioned above, has been a huge boon. Furthermore, any kind of exercise is good but I have found positive mood related changes as a response to recently getting an electric bike which has helped to get regular bursts of exercise throughout the day when I get bored of being around my apartment.

Much like how interleaved learning is a key trick to use to deeply learn subject matter, I've found interleaving a diverse set of activities has been key to finding that physical "balance" - human body itself is more than sophisticated enough to handle the self regulation itself but without the right component inputs your jets aren't going to be running at peak performance