He dranke water of the welle,
And ȝitt was he wyghte!'
Both Sir Thopas and Sir Perceval were water-drinkers, but it did not impair their vigour.
In the same romance, p. 84, we find—
'Of mete ne drynke he ne roghte,
So fulle he was of care!
Tille the nynte daye byfelle
That he come to a welle,
Ther he was wonte for to duelle
And drynk take hym thare.'