Jiu Jitsu training commonly entails real-time sparring, referred to as rolling

https://graciebarralakenorman.mataroa.blog/blog/gracie-barra-lake-norman-brazilian-jiu-jitsu-in-cornelius-nc/

Jiu Jitsu training commonly involves real-time sparring, referred to as rolling, where pupils use methods in real-time against resistant partners