INSTRUCTORS
Mollii Khangsengsing
Lead Instructor: Tuff Love Self-Defense
Brazilian Jiu-Jitsu Instructor: Four Elements Fitness
Mollii (she/her) is the first Laotian female black belt in Brazilian Jiu-Jitsu (BJJ) and has been training since 2006. Kickboxing is among the martial arts she also studies. In 2008, Mollii founded the Sweaty Betties, one of the first women’s BJJ organizations anywhere in the world. In 2019, she co-founded Tuff Love Fitness.
Mollii has over 20 years of experience teaching martial arts to all genders and ages, with a specialization in self-defense. In addition to being the lead instructor for Brazilian Jiu-Jitsu program and the youth classes at Tuff Love’s gym Four Elements Fitness and lead self-defense instructor of Tuff Love Self-Defense program, she also heads the women’s Brazilian Jiu-Jitsu program at Zaytuna College.
As a lifelong athlete, Mollii understands how martial arts and fitness can change one’s life for the better. Due to war, she immigrated to the U.S. as a child refugee, and it was through her love of martial arts and fitness that she was able to quickly adapt to a new country and cope with trauma.
Karin Spirn
Kickboxing Instructor: Four Elements Fitness
Instructor: Tuff Love Self-Defense
Karin (she/her/they/them) has trained in various martial arts since 2003. The bulk of her training has been in Chinese kickboxing (San-Shou), but has also trained extensively in Muay Thai, Brazilian Jiu-Jitsu, Boxing and Tai Chi.
She loves working with students from beginner to advanced, and has experience teaching women, LGBTQ students, and students with disabilities and fitness challenges. She believes martial arts can benefit everyone who practices at any level, from basic movement training and choreographed forms to sparring and competition.
_JPG.jpg)
Adam Caldwell
Kickboxing Instructor: Four Elements Fitness
Instructor: Tuff Love Self-Defense
​
Adam (he/him) has over four decades of experience training and teaching martial arts. Adam is a san shou national champion, kickboxing instructor at EBM Kung Fu academy, an assistant coach of the Oakland San Shou Team, and one of Tuff Love Self-Defense instructors.
​
Roxy Buu
Brazilian Jiu-Jitsu Instructor: Four Elements Fitness
Instructor: Tuff Love Self-Defense
​
.jpg)
Roxy (she/her) is a BJJ Black Belt under Professor Chris Coldiron of Checkmat. She has 17 year of experience training both No-Gi and Gi Jiu-jitsu. Roxy also has a background in Taekwondo, Muay Thai kickboxing and is certified as a personal trainer.
​
Currently, Roxy teaches Jiu-Jitsu and self-defense in Oakland.
Xica Chen
Kids Martial Arts Assistant Instructor: Four Elements Fitness
Assistant Instructor: Tuff Love Self-Defense
​
Xica Chen (They/Them) began their Brazilian Jiu Jitsu journey in 2022 and is a blue belt under the guidance of Mollii Khangsengsing. Their martial arts background includes training in folk style and freestyle wrestling since high school, earning collegiate scholarships for wrestling from 2013-2015. Post-college, Xica has since coached middle and high school wrestling at their alma mater. Currently, they assist with the kids class and volunteer to help teach the self-defense class, showcasing their dedication to both the sport and community involvement.