In fact, if a man is not regularly waking up with a woody, he may additionally need to e book some high-quality time along with his physician or urologist. Waking up with publish-sleep erection is a very clean signal of a healthy penis. Erections Viril XL in a Nutshell To understand sleep erections, it is essential to first recognise how the "intentional" erection works. It all begins whilst a person stories some kind of exhilaration or stimulation.