Boxing + strength. All in one workout.

Jaime was born in the Bay Area and grew up playing basketball and running track in highschool! She loves to travel and has even done two humanitarian trips in Africa where she almost got eaten by a lion, yikes! You can find Jaime either channeling her inner bookworm or achieving her bucket list goal of going to every MLB stadium. Jaime has been in the fitness industry for 10 years working different roles in group fitness and was even a personal trainer for 4 of those years. She started and continues her fitness journey for her mental health and is super passionate about sharing her experiences and love for fitness with others. She loves building relationships and forming memories, especially with the Rumble fam! Jaime will encourage you to hustle with her motivational quotes blasting some hip hop and country bangers! She is your ultimate hype girl, #1 fan and pretzel connoisseur! Lose yourself in her class and you’ll come out feeling like a badass!

Meet Coach Billy, the class clown immortalized in every yearbook, your unofficial hype man according to the yellow pages, and the maestro of positive vibes. He takes pride in keeping his ego in check – it's nowhere near the size of Kim Kardashian's famous derrière.

For the past four years, he’s proudly donned the hat of a fitness instructor, guiding and inspiring others on their wellness journey. From heart-pounding workouts to celebrating victories, each session has been a step towards a healthier, happier lifestyle for his clients.

He has mastered the art of making squats feel like a party and turning burpees into a comedy act. His secret weapons? A playlist that could rival a DJ's, an uncanny ability to count reps while cracking jokes, and a love for fitness that even dumbbells envy. Join his class, where sweat meets laughter, and the only thing heavier than the weights is the dose of fun!

Ysa is a Bay Area born, Indian Reservation raised, lover of all fitness. Particularly contact sports and heavy weight lifting! She was a former wrestler and wrestling coach before developing a love for boxing during the pandemic, which she did for fun before becoming a professional fitness coach. Having lived her entire life with chronic pain, Ysa is very passionate about making fitness not only accessible, but enjoyable for all groups of people to push their limits and surprise themselves with what they’re capable of. Outside of the gym, she is a very laid-back outdoor enthusiast and gamer. You can find her either outside hiking with her dog, skateboarding, rock-collecting and fossil finding, fishing on a boat in the ocean, or inside gaming, weight lifting, or chilling with her pet snake. In Ysa’s classes, expect high energy, heavier weights than you’d expect, and always an extra push when you need it!

Jacob’s journey in fitness began with a passion for helping people become stronger, move better, and feel their best, eventually becoming a NASM Certified Personal Trainer and Corrective Exercise Specialist. Boxing came later, taking that passion in a new direction as Jacob stepped into the ring and competed as a USA amateur boxer. Today, he brings both worlds together as a coach combining his fitness background with real boxing experience to create an energetic, encouraging, and technique-driven Rumble experience. As a born-again Christian, Jacob strives to lead through faith, humility, hard work, and service to others. When he steps onto the Rumble stage, expect authentic boxing technique, plenty of energy, and a coach who wants you to leave feeling stronger and more confident than when you walked in—working with you until the final bell.

Bay Area born and raised, Olivia has been coaching fitness since 2012 and fighting since 2019. A multiple-time amateur Muay Thai champion with professional experience in Thailand, she blends elite fight knowledge with an upbeat, motivating coaching style. As a plant-based athlete, she believes strong performance comes from smart training and consistency. Olivia is passionate about helping people understand the “why” behind striking while keeping things fun, challenging, and accessible. A self-proclaimed travel bug and adrenaline junkie, she’s always chasing the next adventure. Whether that’s exploring a new place, snowboarding when winter hits, or hiking with her crazy boy Noah who’s a Jack Russell terrier.

Noelle is Bay Area born and raised through and through. She is a 3rd degree black belt in Kajukenbo and a practitioner of Filipino Martial Arts. She has worked in and around the fitness industry and brings more than 20 years of coaching experience. Noelle has worked in fitness as a personal trainer, fitness program designer, group instructor and has even trained others to coach! She’s passionate about helping others find their passion for fitness and ensuring her members leave in a better mood than when they stepped foot through the studio doors. When she’s not at Rumble, you can catch her bouldering, volunteering her time coaching competitive Sport Karate, spending time outdoors, catching up with a good book and snuggling up to her husky mix, Pua!

Mr. 305? Florida Man? As a little bit of both and then some, Abhi is a true “renaissance man” - and adaptability is a key part of his story. Born in India, and then moving around in the US, he had to learn quickly on his feet and adapt to his constantly changing environment. He eventually settled down in Miami, FL where he set his roots for 14 years. Although education was a huge emphasis in his life growing up, he couldn’t ever sit still and picked up an active lifestyle, including swimming, tennis, and even 10 years of Bharatanatyam (Indian classical dance). The grind didn’t stop there as he brought his talents to the Bay Area, where he completed his B.S in Bioengineering at U.C Berkeley. One summer, he joined a boxing class on a whim and absolutely fell in love with it, and continued working with different gyms before finally reaching Rumble’s doors. With his fuego music and non-stop energy, he truly believes that Rumble can be a home for all and is excited to share his love for the workout with you. No matter your background or experience, he’s there to help you feel like your best-self and have fun while doing it - dale!

As a former dancer and lover of group fitness, Katrina naturally stumbled upon Rumble and couldn’t get enough of the flashing lights and sick beat drops. It was through Rumble that she found a passion for boxing. Working with boxing trainers from SF, Hawaii, New York City and even trying out sparring for a bit, she boxes wherever and whenever she can.

Bay Area born and raised, she’s a hustler. Always looking for opportunities to grow, she wanted to incorporate her love for boxing into her daily life. Before her 9-5 (or after it) she can’t wait to hit the Rumble stage hopefully inspire you to love fitness/boxing too!

Sean is a dedicated fitness coach with a passion for helping members achieve their goals. Originally from the Bay Area, he transitioned from the medical field to become a trainer at a boxing/kickboxing gym. With over 2000+ hours of experience in group and one-on-one training, he has helped many people get stronger physically and mentally. As the Head Trainer at Rumble Rocklin, Sean is thrilled to join the team in San Ramon and share his love for the Bay Area! He looks forward to visiting often and extending his passion to encourage, motivate, and inspire every person every workout. Outside the gym, Sean enjoys quality time with his family, involvement in his church community, and staying active. Sean is on a mission to create a welcoming environment, empowering individuals on their fitness journey with a "champion mentality" of giving their best, never giving up and most importantly, having fun with it!!

Born & raised in the Bay Area w/ a short stint living in Santa Barbara go school. Go Gauchos!! I believe in order to truly help people you have to believe in what you do.

Health & fitness has not only been a deep passion of mine but also a driven purpose to help people reach their goals, expand their potential, & learn new things about themselves along the way. I love meeting people and learning about who they are and where they are looking to go with their goals.

Let’s Rumble!

Cat is your gym big sister with a mama bear attitude.

After growing up without the chance to explore martial arts, she made up for lost time the moment she left home—starting with Tae Kwon Do at San Francisco State and diving headfirst into striking arts ever since. Her background includes Muay Thai, boxing, kung fu, tai chi, Krav Maga, and Filipino Martial Arts.

With over a decade in the fitness world, Cat is a NASM Certified Personal Trainer and AFAA Certified Group Fitness Instructor who’s all about helping you feel strong, confident, and absolutely unstoppable. As a nutrition and dietetics student, she also brings the “fuel your body right” side of things into the mix.

Expect high-energy, sweat-heavy classes, big motivation, and a coach who’s always in your corner.

Outside the studio, Cat is a mom to two chaotic creatures—a rambunctious little boy and a cat who definitely runs the house. You’ll find her indoor rock climbing, gaming with her husband, or trying out new ways to train—including bodybuilding, which helped her lose over 70 lbs postpartum.

Come for the workout. Stay for the hype.