The main principle of natural penis enlargement exercises is to vastly improve the circulation and blood flow throughout your manhood. This in turn can encourage the erectile tissues of the penis to hold far more blood during erections. Due to the repetitive nature of exercise, this will eventually lead to an increase on penis size for both your erect and flaccid state.
The main natural penis enlargement exercise for increasing penis girth are known as jelqing or jelqs. This involves a "milking" type action and forces blood into all areas of the erectile tissues. You should form an OK symbol by touching your thumb and forefinger together. Wrap around your member and firmly "milk" down the shaft and stop just before the head. You should gradually build up the amount of time you spend jelqing. This could range from 5 minutes for a few days in your first week and up to 30 minutes a day after a month or two.
If you also wish to increase your penis length, you should be using exercises that can stretch the ligaments of the penis. It is during penis enlargement surgery that the suspensory ligament of the penis is cut into. So rather than face that horrifying prospect you can merely carry out some targeted natural penis enlargement exercises.
Grab your manhood with a fairly firm grip just below the head. Pull your penis out straight in front of you and hold for 30 seconds. Then complete 30 second stretches for what i like to call the 12 points of the clock. So imagine their is a clock face in front of you and stretch your member to 12 o'clock for 30 seconds, then 1, 2, 3 etc.
Although an increase in penis size is probably the reason you are looking to start using natural penis enlargement exercises, you can also work on improving your stamina. Kegels are exercises that work on the PC muscle. This is the muscle you use to stop yourself urinating. Practice squeezing this muscle and hold for 10-15 seconds. Repeat this 5-10 times and increase the length of your squeezes as this muscle gets stronger! This exercise can help to cure premature ejaculation and gives you far more control over your orgasms.