Me personally, I spend a lot of time on preservation of the body and mind. It could be a directive from God, but that's what I do. No corruption, no poison, nothing beyond necessity.
Ironically, I don't pay a lot of attention to my health. I exercise everyday but I still eat some junk foods. Not a lot, but still. Although the "junk food" I eat is mostly nuts, it might be too salty for many and probably had other toxic ingredients.
I barely drink water as well. Most of my fluid intake is from sweet milk beverages I made myself. In fact, drinking a glass of water in one sitting will literally make me sick. So my "water" is technically "hummingbird nectar" (1 part sugar and 5 parts water - tropical mix). Before I started eating salty nuts, I added more salt to sweet beverages. After a marathon, I'd add enough salt to my drinks, it's nearly as salty as sea water! Salt literally comes off my eyes!
I also work multiple shifts each day. afternoon, evening, and past midnight with some 1 to 2 hr naps in between and sometimes morning too. Stress levels is relatively high.
No food supplements, no meds. I also never visit the doctor because I'm not insured.
On top of this, I also live in one the most polluted cities in the world right next to a very busy street in an apartment where neighbors smoke so I breath 3rd hand cigarette smoke as well.
The Lord did tell me to exercise and limit my meals to just 2 each day, but it wasn't much because I'd do it anyway because it's fun. I skate, run, bike, and lift weights.
But honestly, I don't really desire to live long on Earth. I'd rather die in the next 10 years than live to over a hundred even if I managed to stay fit over the age of 100, I'd rather die sooner than later.