Dzambekov gives El Biali restless leg syndrome at Zuffa Boxing 03

There's a reason your mom doesn't let you watch combat sports, and Sunday his name was Umar Dzambekov.

Dzambekov sent Ahmed El Biali into another dimension with one sickeningly perfect uppercut in the second round of their 175-pound matchup at Zuffa Boxing 03 on Sunday at the Meta APEX in Las Vegas.

El Biali fell slowly backward to the canvas, and his left leg began an uncontrolled twitching while he tried to gather consciousness to figure out what happened.

The knockout came 57 seconds into the second round.

Check out the finish below.

This article originally appeared on MMA Junkie: Zuffa Boxing 03: Watch Umar Dzambekov's one-punch KO of Ahmed El Biali