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Six-Time Ironman World Champion Mark Allen Endorses Frontier X2

Six-Time Ironman World Champion Mark Allen Endorses Frontier X2

LONDON, England, Sept. 13 (Korea Bizwire) — Mark Allen – dubbed the greatest endurance athlete of all time through an official ESPN poll – has partnered with pioneering medical technology start-up Fourth Frontier to help endurance athletes monitor their heart health and train at optimum levels. The company has made great strides to release the Frontier X2, the [...]