Though the body of knowledge on this particular issue is scant, there's evidence to show that the following can cause the symptoms known as "hard flaccid":
-Pelvic floor strain (CPPS)
-Direct trauma to the penis (e.g.- rough masturbation, sex, or improperly performed exercises)
-Acute/chronic stress
-Stimulant use
The following abstract shows how fascia has contractile properties and may be a contributing factor to this issue:
Fascia Is Able to Actively Contract and May Thereby Influence Musculoskeletal Dynamics: A Histochemical and Mechanographic Investigation
-Pelvic floor strain (CPPS)
-Direct trauma to the penis (e.g.- rough masturbation, sex, or improperly performed exercises)
-Acute/chronic stress
-Stimulant use
The following abstract shows how fascia has contractile properties and may be a contributing factor to this issue:
Fascia Is Able to Actively Contract and May Thereby Influence Musculoskeletal Dynamics: A Histochemical and Mechanographic Investigation
Comment