Explaining on Instagram: "Breathing in helium gives your voice that funny, high-pitched sound — and it all comes down to physics, not your vocal cords. 🎈😂 Helium is much lighter than air, so when you inhale it, sound waves travel through your throat much faster. Your vocal cords still vibrate the same way, but the helium changes how the sound resonates, boosting the higher frequencies and making you sound squeaky. ⚡🎤 The effect wears off quickly once you breathe normal air again — a harmless