Theists only: Do you ever fast/follow religious dietary restrictions?

[Former President tack50]

Not a Theist but this easter on Holy Friday I had a fun exchange with my dad.

Me: Why are you giving me a sausage for dinner?
Dad: Because that's the food we have
Me: Don't you know today is Holy Friday?
Dad: Since when are you a devout Catholic?
Me: lol

Now seriously my family actually used to follow the "no meat in Holy Friday" rule for quite a long time though it was quietly dropped without paying much attention to it some time in my teenage years iirc.

Other than that neither me nor any of my relatives have ever followed any dietary restrictions to my knowledge. Like I definitely haven't heard anyone, not even devoutly Catholic relatives of mine to do the full fasting on Holy Friday or Ash Wednesday; or the "no meat" rules on Lent Fridays (outside of Holy Friday itself).