Flashback Jiu-Jitsu and Kickboxing

Flashback Jiu-Jitsu and Kickboxing operates as Flashback Martial Arts at 2310 W. College Ave. Suite G in Appleton, Wisconsin, representing Team Vaghi under Rodrigo Vaghi. Most classes are taught by 1st Degree Brazilian Jiu-Jitsu Black Belt William Krieg, who began training jiu-jitsu in 1997 and started teaching after launching a grappling club in 2000, while Jalena Rueger serves as office manager. The curriculum includes Adult Brazilian Jiu-Jitsu, Youth Brazilian Jiu-Jitsu, Boxing, Self-Defense Classes, Law Enforcement Training, Military Veterans programs, and Private Lessons. Standard Brazilian Jiu-Jitsu sessions cover conditioning, drilling technique, and sparring for both self-defense and sport tournaments, with a traditional gi uniform required after the initial trial class. The weekly schedule runs from Monday through Sunday, featuring Youth Brazilian Jiu-Jitsu and morning and evening Adult Brazilian Jiu-Jitsu on Tuesday and Thursday, midday Jiu-Jitsu and Boxing on Friday, Jiu-Jitsu Competition Team Training on Saturday morning, and Boxing sessions across Monday, Wednesday, Thursday, and Sunday.