Plutarch, Table-Talk 3.5 (652 D)
“Men who drink a lot of wine are rather sluggish at intercourse and they ejaculate semen not at all strong or good for fertilization; instead their attempts at sex with women are cursory and incomplete because of the weakness and frigidity of their seed.
Indeed, however much men suffer because of the cold occurs to them when they are drunk: tremors, heaviness, paleness, sudden jumps in the limbs, senseless speech, a lack of feeling in the joints and extremities. For most men, being drunk results in paralysis, whenever the wine totally expels and defeats the heat.”
οἱ δὲ πίνοντες πολὺν ἄκρατον ἀμβλύτεροι πρὸς τὰς συνουσίας εἰσὶν καὶ σπείρουσιν οὐδὲν εἰς γένεσιν ἰσχυρὸν οὐδὲ κεκρατημένον, ἀλλ᾿ ἐξίτηλοι καὶ ἀτελεῖς εἰσιν αἱ πρὸς τὰς γυναῖκας ὁμιλίαι αὐτῶν διὰ φαυλότητα καὶ κατάψυξιν τοῦ σπέρματος. καὶ μὴν ὅσα πάσχουσιν ἄνθρωποι ὑπὸ κρύους, πάντα συμβαίνει τοῖς μεθυσκομένοις, τρόμοι, βαρύτητες, ὠχριάσεις, σάλοι τοῦ περὶ τὰ γυῖα πνεύματος, ἀσάφεια γλώττης, ἔντασις τῶν Eπερὶ τοῖς ἄκροις νεύρων καὶ ἀπονάρκησις· τοῖς δὲ πλείστοις εἰς πάρεσιν αἱ μέθαι τελευτῶσιν, ὅταν ἐκπλήξῃ παντάπασιν καὶ κατασβέσῃ τὸ θερμὸν ὁ ἄκρατος.
