Good Friday 2023: As a sign of respect and mourning for the sacrifice he made, many Christians refrain from consuming meat on this day. Due to Jesus' self-sacrifice on Good Friday, Catholics have traditionally refrained from consuming meat on this day and have opted for fish as a more appropriate animal protein to consume. During the medieval period, the church prohibited the consumption of warm-blooded animal meat on Fridays, leading to the popularity of fish as an alternative.