Hello sir . how can i increase my penis size naturally?

No proven way has ever been documented other than having a penile implant. I would not advise that unless you cannot get a erect ion at all.

There are no herbs, medications, vacuum devices or operations which will increase penis size in spite of all sorts of false claims. Many men are concerned about having a small penis even when it is well within normal range. Please avoid comparing yourself to male porn stars. Some men with extra-large penises need prostheses to achieve a satisfactory erection. There is more to sex than penis size!

You can not. Any treatment offered by anyone is a fraud and designed to separate you from your money. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs.