@teachyouman on Instagram: "A smart use of airflow instead of lung power. When she blows across the opening instead of directly into it, the fast-moving air creates a low-pressure area. This pulls in surrounding air, allowing the sleeping bag to fill much faster with less effort. It works because moving air drags more air with it, multiplying the volume that enters the bag. Faster airflow + wider opening = quicker inflation with less effort. Safety note: Make sure the opening is clean to avoid b