Heart beat and breath holding sample video.

This is a sample of my heart beat and breath holding videos which are for sale on my web site. Please visit my store to see more. I have close up visual heart beats, fast heart beats from exercise, heart beat readings on and EKG or ECG machine, heart beat contests with my friends, breath holding contests, extreme breath holds by myself while hooked up to the pulse oxymeter which measures the oxygen in my blood as well as pulse rate and much more.