You are enterring the middle life transition. Your endocrine function can not produce a testosterone burst and burning to charge your parasympathetic sexual nerve that actuates your erection.
After you do the penile enlargement exercise, your parasympathetic sexual nerve is empty because the stimulated erection has used up your bioelectric energy which is supposed to be charged by a testosterone burst and burning.
In fact, the more you force your penis to erect with the penile enlargement exercise, the more your penis shrinks. The reason: You have insufficient HGH, testosterone and DHEA to charge your parasympthetic sexual nerve to produce a acetylcholine action (the Yin Chi in the Chinese Medical Concept.) This exercise is similar to the Penile Vacuum Pumping. After vacuum pumping, you will no longer be able to re-eject your penis to a hard stage for 1-2 days, and the flaccid penis is actually shrunk and wrinkled. This is what you got with the Penile Enlargement Exercise. My readers e-mailed these manuals like yours.
You can forget any penile enlargement exercises which never work.
The three penile cyclinders are the spongy blood balloons, the elasticity of the penile tissues determine how much the penile shaft can be ballooned up, and the bioelectric level of the parasympthetic sexual nerve, charged by the testosterone burst and burning, is the main energy source to actuate a high-blood pressure to inflate the penile balloon.
You need ViaGrowth-III/Fibra (item 1-004) and Ginseng Power Max 4X (item 2-007) to power your parasympathetic nervous function.
http://www.actionlove.com/mail/herbform.htm
Also read
http://www.actionlove.com/cases/case7648.htm
which teach you how to use the pubis to proudce piezoelectric energy to charge your parasympathetic sexual nerve, and how to stimulate the two major nerves in the superior cyclinders to expand the penis.