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Todd Sampson uses the latest science to train his brain to become more adaptable. To prove that it's possible, he risks his life rock climbing blindfolded up a 120m rock face in Utah's Moab Desert.

Todd Sampson puts brain plasticity to the test - honing his sight, hearing and touch for an incredible challenge to crack open a safe with a million different combinations in under an hour.

To prove that brain training can overcome fear, Todd uses all his previous brain training to face his fears and achieve the ultimate challenge - a skywalk between two buildings 21 floors high.