This is old school. South Korean female bantamweight Ji Yeon Kim may be our new favorite UFC fighter. When not getting a fight with Holly Holm, the unbeaten 6-0 Kim can be found training at her gym. A member of the So-Missions Jiu Jitsu fight team, Kim is not only doing cardio and ground work but she is improving her stand-up in the best way possible; having her chin repeatedly punched on by larger male teammates. These no-holds-barred vintage training methods would make members of Chute Boxe and Team Hammer House slow-clap in approval. Watch Ji Yeon Kim hard spar with three male teammates and eat some punches that would drop most of her male 135-pound counterparts.