I weigh 140lbs, and eat meat probably 2-3 times a week on average. I eat a regular burger probably once every 3 months or so and it usually knocks me on my ass

I weigh 140lbs, and eat meat probably 2-3 times a week on average. I eat a regular burger probably once every 3 months or so and it usually knocks me on my ass and makes me feel an extreme level of full as well as very tired (I usually have fries and a beer at the same time). A Beyond burger with cheese and fries shocked me with how similar I felt afterwards, I had it around 7p and struggled to stay awake another 3 hours. I even had a similar feeling of still being satiated when I woke up the next morning like I get from eating a big fatty burger.