We’ve all had those moments—mowing the lawn in the Texas heat, running errands in August, or just existing in San Antonio in August between 2 and 5 p.m.—when we mutter, “I’m dying of thirst!” But how long could you actually last without water? Spoiler: far less than you think, and far less than your abuelo can last without his afternoon cerveza (which sadly doesn’t count as hydration, no matter how passionately he argues otherwise).