When Khalil Zahar and Tommy Duquette first pitched their boxing workout startup, Hykso, the investors saw a big opportunity. They wanted to know: Could Hykso be more like Peloton, an at-home cycling system that was starting t...

Could a little sensor designed to measure punches be the next big hit in a long line of fitness fads? The founders of Hykso think so. Now they just need to last a few rounds in the ring with our …