BIOLOGY | HEALTH | MEDICAL |FACT on Instagram: "Day 25/50 This 29-second reel exposes the clever illusion behind a viral “lung power tester” prank. At first glance, the device looks like a legitimate medical breathing tester. The performer demonstrates it effortlessly—blowing into the mouthpiece as a small wheel on top spins, convincing everyone that the machine is measuring lung strength. But the trick is already in motion. While appearing to blow normally, the performer subtly blocks the main