Use it or Lose It
You may have heard it said, “If you don’t use it, you’ll lose it.”
That really does apply to the penis in relation to penis length and girth.
Men normally have a number of erections each night, whilst they sleep. These were always scoffed about as being related to “dirty dreams” etc., but urologists have understood in recent years that these night-time erections are a part of the normal body function, to keep the penis healthy.