Regular Check-ups: One should get an annual physical check-up to make sure everything is as it should be.
Get enough sleep: Getting enough sleep is necessary to stay fit and healthy, many of us do not get enough.
Exercise
Eat healthy food
Do not skip breakfast
Drink plenty of water
Do not take the stress
Eat a variety of foods.
Base your diet on plenty of foods rich in carbohydrates.
Replace saturated with unsaturated fat.
Enjoy plenty of fruits and vegetables.
Reduce salt and sugar intake.
Eat regularly, control the portion size.
Drink plenty of fluids.
Maintain healthy body weight.

https://www.healthline.com/health/fitness-exercise-eating-healthy