James Jackson

James Jackson is a personal trainer who uses his expertise in strength and conditioning to create helpful workout tutorials that show fitness enthusiasts how to build muscle while staying safe in the gym. He draws on the latest sports science data as well as tried and tested training techniques to get the best results for his clients without them having to live in the gym.

Learn why most people won’t grow any taller after turning 18.

Is it still possible for males and females to grow taller after 17?

Find out if it’s actually possible to grow taller after 25 years old.

Learn why only a small percentage of males and females will grow taller after 20 or 21 years old.

Find out why growing taller after 40 years old is close to impossible.

Discover why most people will not grow any taller after 30.

Here’s how 11 year old boys and girls can grow taller and increase their height.

Discover the average height for 13 year olds and learn how tall you’re supposed to be.

Discover the average 15 year old height for females and males.

Find out the average height for 16 year olds and learn how you compare.