Detoxification and dredging collaterals, conditioning the body, invigorating qi and consolidating the body. Fundamentally speaking, as long as you exercise more and drink more water, eat reasonably, don't stay up late and have a good sleep, that's enough.
You don't need to read too much health care knowledge, a lot of it is nonsense. It is enough to be able to do the above. But it's actually quite difficult.