How i can increase my hight after age of 20?

Height: By age 20, you have already reached your peak height. Sorry, but there is no way to increase your height.

I would love that :): Most men are done with vertical growth by about 20..Some may stop a bit earlier and some later, but my guess would be around 20. Unfortunately, we continue to grow side-way persistently into old age. The only way you can get additional height (besides shoes) is to have a leg-lengthening surgery, a gruesome and presumably expensive process. It done more commonly in china. Good luck.