If you implement these few instructions in your life then you will be fit and healthy:
1. Have Breakfast
2. Drink Plenty of Water
3. Take an Exercise Break
4. Go Offline and sleep on time
5. Learn Something New(New skills help keep your brain healthy)
6. Don't Smoke
7. Train Your Muscles
8. Take the Covid-19 vaccine.
so what do you guys think should be the life expectancy of a healthy person?
That depends on the person, and
the choices they make.