Now, back to the shells. While they might look harmless, they're actually quite fibrous and can cause some, ahem, discomfort if ingested. Imagine trying to digest a tiny, hard piece of plastic (not that I've tried, but I've heard it's not fun). Your body will be all, "Uh, what's this weird thing doing in my stomach?"
But don't worry, it's not all doom and gloom. If you're looking to get creative with your sunflower seed shells, you can actually use them as compost or even as a natural pest repellent in your garden. Who knew those pesky shells could be so useful?