You don't have to go full keto, and I don't. Just be cognizant as you eat that hamburger at lunch time that this is directly going to cause me to feel lethargic

You don't have to go full keto, and I don't. Just be cognizant as you eat that hamburger at lunch time that this is directly going to cause me to feel lethargic and bad for awhile this afternoon. If you still eat it, that's fair. Just being aware of the tradeoff was a step forward for me though.