Supriya Nair is a junior at Stanford Online High School, a rare triple‑weapon fencer, and the creator of Neurofencing — a project that asks a simple question every athlete knows: Does a good warm‑up really make you faster? She started by wiring herself up with cheap sensors in her garage. Two years later, she’s collecting data at major hospitals and university labs, using high‑end gear to track hundreds of lunges and reaction times.