Eating a lot of mostly good food and drinking a ton of water seems to be the thing that has the biggest impact on me so I focus hard on that.
Next is just moving around, and I’m lucky because I work in a trade and came in with decent strength and mobility so the job itself doesn’t beat me up like some of the guys I work with. It really seems like being stronger would significantly reduce the issues they have.
Also cold showers and/or finishing all my showers with cold water. That seems very helpful.