How They Work
As your body goes through puberty bones can grow and stretch and lengthen however after this has taken place it is "impossible to grow further".
The stretches are aimed at places that you can still lengthen though such as the shins, thighs and also the spine. This backdoor method can give you up to 3 inches of extra height!
To get you started you can go through some simple stretches just in the morning....