I tried out the vagus nerve stimulator that Bryan Johnson wears before bed

Wear it every night, and you might bite your fight or flight. The trendy new wearable might look simple and unassuming, but the Pulsetto FIT is packed with much more advanced health-tech than you might expect. According to Pulsetto, the wellness device works by sending gentle electrical pulses to the vagus nerve, which drives the body’s parasympathetic nervous system. This complex system helps govern the body’s “rest and digest” functions, like...