When it comes to advice, there’s no better source than someone who’s been there, done that.

Del Hall gave up everything but beer last year for Lent. And while that sounds like a total frat boy thing to do, Hall was actually very measured in his approach to the fast. He researched fasting and consulted his doctor prior to the onset of the fast.

Hall expressed many benefits of the beer-only fast, including the fact that he lost over 40 pounds in the process. However, the fast isn’t for everyone. Here’s what he has to say to anyone thinking about taking the plunge: