The body does not remain the same as it was 20 or even 10 years ago. Our training method could not remain the same as it was then either. Some exercises can help us keep up.
9. Compensation
With this maneuver, the apneist returns the eardrums to a neutral position, which, due to the external pressure, which reduces the volumes of the air zones of our body, would tend to introflex to the point of injury or rupture if they were not rebalanced. Ambient pressure, which increases with depth, causes a reduction in the volume of the aerial parts of our body (lesson 3), compensating the ears reconstitute the original volumes, keeping the eardrum in a neutral position.