Simple ingredients, easy, and if you want to conserve calories even more, you can simply opt for butter lettuce instead of taco shells! (eatdrinkshrink.com)
This causes you to conserve calories for later rather than burning them normally, forcing your metabolism to slow significantly. (lifesum.com)
Our bodies have a built - in survival mechanism to conserve calories when we go for a long period of time without eating. (verywellfit.com)