sgmd gupta shallow water blackout_00012120
sgmd gupta shallow water blackout_00012120

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    Swimming hazard: Shallow water blackout

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Swimming hazard: Shallow water blackout

CNN's Dr. Sanjay Gupta warns about shallow water blackout, which puts even the most fit athletes in danger.

Swimming hazard: Shallow water blackout

CNN's Dr. Sanjay Gupta warns about shallow water blackout, which puts even the most fit athletes in danger.