Halo’s second-gen brain stimulating headphones run $399

Two and a half years after doing pushups onstage at Disrupt New York, Bay Area-based sports health company Halo Neuroscience is back with the second generation of its brain stimulating headphones. The biggest update to the spiky wearable this time around is a newfound focus on the headphone aspect of the product. The Halo Sport 2 adds Bluetooth audio — a nice change from its hardwired predecessor. After all, no one wants to be tethered while working out. Co-founder Dr.

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