Answer:
Eat healthy! - This is subjective, this can mean anything from entirely removing sugar, carbs, and other fats. Or simply just eating more Fruits and Vegetables.
Exercise! - Work out your muscles, lose fat, and get stronger! Who knows? maybe you could create a moving company and make some money!
Stay Active! - Don't sit around, get a standing desk! Bike while you watch TV or even just lift weights whilst watching your favorite show!
Games & Puzzles! - In order to be physically healthy, you gotta be mentally healthy! Work out your brain with Chess, HOI4, Word Puzzles & or any other game or puzzle of your choice!
Remember, Doing Nothing will result in nothing.