5x50 Challenge, Fitness, Gadgets, Time Management, Training What is the 5×50 Challenge? February 19, 2014February 22, 2014 Posted by Thea Newcomb Interested in Learning More About the 5×50 Challenge? Read on… 30 March 2014 marks the 3rd year running (pun intended) of the 5×50 Challenge. The 5×50 Challenge is the brain Read More