I decide to test myself to see how long I can hold my breath underwater in my bathtub! I dunk myself in the water multiple times, submerging my head completely so that I have no chance to let out my breath. With each dunk, I take a big breath, filling my lungs with air, then I puff out my cheeks and open my eyes underwater. Occasionally, bubbles blow out of my mouth as I lay submerged in my bathtub. I try as hard as I can to hold my breath as long as I can with each dunk!