How long does it stay blue?
Intense stretches for a very short time-10 to 30 seconds or so- shouldn't give you much trouble at all as long as you massage the bloodflow back into your penis at every opportunity.
One prominent theory propounds that a man's natural nocturnal erection cycle is mostly to keep proper blood (hence oxygen and nutrients) flow into an otherwise "dead" penis.
And I don't think anyone wants a necrotic cock.
Remember: bloodflow=healing, healing=growth.
P.S. Have a look at my sig...might give y'little help.
