We had a chance to train at the Griffin Club with mark__visser , and he not only doubled my breath hold but did it where my heart rate was LOWER when I held it longer! It’s an unbelievable course. Mark has an incredibly unique Ocean Warrior training course that I have been hearing so much about. With the course, you are improving everything from the mental game to learning to conserve oxygen and being mindful of your heart rate. All these tools are so handy when you are surfing and get into dicey situations.  I have heard our surfers talk about it and how powerful it was, and boy, they are right! Thank you, Mark, for your mentorship, friendship, and training. #puttheworkin💪