This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
- Complete your sleep everyday, 12 hours of sleep is recommended and sleeping between 1-5 PM is good.

Height Increasing (and also nutritious) Food
- Eat this healthy foods to gain height, at the same time be healthy. Some of these are MILK, DAIRY FOODS, FRUITS AND VEGETABLES, CHICKEN AND BEEF, EGGS, ETC. I recommend milk, fruits and vegetables as they are the most not-too-expensive and also eggs.

Yoga! and Body-Stretching?! Exercise!
- It is a best way to gain height, it is proven to increase height naturally. 

Have a Balanced Diet
Have a source of Vitamin D! 
- Vitamin D is key for growth and maximum height, so enjoy sunlight, the best source of Vitamin D!

- Practice good posture as it can your physical height.