The catch is the position at the front end of the rowing stroke, with your body curled into a ball.
It is difficult and strenuous to take a full breath in this position for most people, so we are going to train to overcome that weakness by adopting the catch position, either on the rowing machine or using dumbells and performing Powerbreathe inhalations. We perform five inhalations in the catch position before take a full rowing stroke (exhaling on the drive, power-inhaling on the recovery) or performing a dumbell deadlift.
Perform that cycle five times at your full POWERbreathe resistance setting...
