I’ve posted several times, in many threads (including this one), explaining the anatomy of this situation. Exercises may give a temporary increase in glans size, but the material you’re working with is different than the rest of the penis. It’s very elastic and can deform and expand greatly, but will always, eventually, return to its former shape and size. It has nothing to do with blood flow and Viagra will definitely not help.
But, you can keep trying. If your head size really bothers you, keep trying. Go back to my post above and see if the exercise links there are of any help.
WorkForLong - your head increases at ejaculation because of the extra squeeze it gets from the bulbocavernosus and ileocavernosus muscles (see my first post in this thread. Also, can you please use “I” when you refer to yourself, we try to encourage proper grammar and punctuation here. Thanks!