Can i tell me how i can strengthen my teeth , my jaw , my cheeks , my face muscles , my whole skull?

HMMM: Fluoride is the best way to strengthen your teeth. Your jaw is already fairly strong and the same is true of the cheek and face muscles. The skull, not much you can to to make its bones stronger.

Healthy head: Exercise, eat right, getting a balance of all essential nutrients, take supplements to take in the needed nutrients you are not getting in your diet, get plenty of sleep, do not drink alcohol except in moderation, do not smoke, make sure you get enough calcium, brush and floss thoroughly twice a day.... Pretty much everything you have been hearing since your were a kid, not much has changed there.