At this point, most football fans know DK Metcalf is a freak of nature. Still, when Metcalf shows off, Sports Twitter can’t help but marvel over his incredible combination of strength and agility.

Metcalf is going viral Saturday for a ridiculous feat in an offseason workout. Metcalf hit a single-leg box jump of 42 inches while holding a 15-pound medicine ball.

The video produced some predictable responses doubting that Metcalf is truly human: