How can i increase my height and now my age is 16 years old before i reach to 18 years ?

Exercise, eat, sleep: Most people reach their maximum height in their late teens. Without nutritional problems or chronic childhood illnesses, height is largely based on genetics and parental heights. Aside from eating right, exercising, sleeping well, and being happy, there's not much a person nor his doctor can do to increase height.

Raising HGH by...: Most men stop growing around age 18 but occasionally some grow until age 21. Our height is mostly determined by genetics but taking measures to increase your production of growth hormone should help maximize your potential height. See http://bit.Ly/1cyctlq for good information on measures that may help. A healthy diet and adequate sleep is important too- going to sleep around 10pm may help.