Ok, sorry for my previous post. Here we go again, hope all is alright now.
Hi there,
I'm 22 y old and i'm 174cm, and of course I want to get taller

Some people say that height can't increase after puberty, others say that ppl continue to grow even to 26-30 y so... my first question I guess is, when exactly ends puberty and can't we grow after that at all? Because I'm pretty sure I gained 2 cms between 2006 (172) and 2009 (174).
I've found a free site for height gain experiments where a man named Foster claims he had gained 2 inches in height in the Lumbar area, which increased its size. That he did in one year with intensive biking and some intense stretching exercises. This theory is supported by another guy, Sky, who claims to have gained 2 cm in 2 months (or something). I am willing to try this routine but i thought I should consult with doctors cause these exercises look quite intense and I don't want to risk damaging my back for nothing
The exercises consist of sitting on the floor with legs stretched in front of you and you bent upwards and try to touch your toes. They say they had done this exercise for an hour every morning and right before they went to bed.
The explanation for that growth in the site is that by performing intense stretching exercises the 5 cartilage discs in the lumbar area will undergo a tear-repair process and will grow. As I get it the growth occurs in these discs only but not in the bones. So, can these discs grow under stimulation?