ALISO VIEJO — Most things bore Ezra Frech, by now. Most things always have.
The birdsong is quiet by the track at Soka University on a July afternoon, and the branches of the surrounding tree canopy barely shiver from the warm breeze through the San Joaquin Hills, and Frech is the only consistent source of noise on campus. The 19-year-old Paralympian talks while he stretches, raising his voice as he presses a Theragun to his thigh. He talks while he rolls a sleeve over the stump of his left leg.