🫁⚠️ LUNG SQUEEZE: WHAT REALLY HAPPENS TO YOUR LUNGS DURING DEEP FREEDIVING? Did you know that at 30 metres, your lung gas volume is reduced to approximately 25% of its surface volume? 😳 🌊 1️⃣ LUNG COMPRESSION As we descend, water pressure increases, compressing the air inside our lungs and millions of tiny alveoli responsible for gas exchange. At 10m → 50% of surface lung gas volume At 20m → 33% At 30m → 25% At 40m → 20% 🩸 2️⃣ BLOOD SHIFT As the lungs compress, blood volume increases in the pulmonary circulation, helping compensate for the loss of gas volume. This remarkable physiological adaptation allows freedivers to reach depths previously considered impossible. ⚠️ 3️⃣ WHEN DOES LUNG SQUEEZE OCCUR? When pressure-related mechanical stress exceeds the tolerance of lung tissues, the delicate alveolar-capillary membrane can become damaged. This can lead to: 🔴 Fluid leaking into the alveoli 🔴 Small blood vessel injuries 🔴 Pulmonary bleeding 🔴 Reduced oxygen exchange ...