Once in a while I use the hotel pool for some apnea training. After another long break I did it again and hit 3:55, extremely satisfying and relaxing.
A colleague joined me to try it out. Even though he is a strong smoker, he did some 3:20. Sensational. There can only be one reason: The tar in the lung trained him to do without oxygen. With this minimal consumption he can stay under water really long without breathing. Tricky. Is this the beginning of a new trend?