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
You did not mention eat the right food, even if you do all these things but if you are not eating the right food, you cannot not maintain a good health, we are what we eat, it's just right that we eat the right food this for me should be consider as the top priority, if you want to have a good health.