This refers to the long axis strokes. I know many (including myself) have better strokes on one side than the other (the latter is often the breathing side), but I wonder how predominant this case is among master swimmers. Also interesting would be whether some have been able to correct this problem through either drills or sheer hard effort.
One major reason it is easier to breathe on one side of the body than the other is that the "dominant" arm tends to be stronger and the head rotation toward the non-dominant side easier. By breathing bilaterally in practice, this strength-flexibility imbalance can be somewhat remediated.
One major reason it is easier to breathe on one side of the body than the other is that the "dominant" arm tends to be stronger and the head rotation toward the non-dominant side easier. By breathing bilaterally in practice, this strength-flexibility imbalance can be somewhat remediated.