Jiu Jitsu training usually involves online sparring, referred to as rolling

https://telegra.ph/Gracie-Barra-Lake-Norman-Brazilian-Jiu-Jitsu-in-Cornelius-NC-10-26

Jiu Jitsu training usually involves live sparring, called rolling, where pupils use methods in real-time versus immune partners. This technique aids enhance timing, reflexes, and problem-solving skills, vital for efficient protection and competition.