GROUP TRAINING

Group Training for Motivation, Strength, and Results

Group Training

Elevate your training with dynamic group classes at Custom Fit—crafted to enhance your fitness journey.

Available to all personal training clients and gym members, these sessions offer expert-led workouts in a high-energy, community-driven setting.

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I went in for a group class and conducted HITT training and it was great. I was trained by Lucia and she was very knowledgeable and very attentive to my needs.

The music was upbeat and useful to increase my energy throughout the workout. The workout area was clean and sanitized. I recommend this location for individuals that want a more personalized workout with a great trainer.

- Alexandra C.

What Makes Our Group Training Different?

COACH-LED TRAINING

Every session is expertly guided to ensure proper form, technique, and progression for all fitness levels.

DYNAMIC WORKOUTS

Varied, high-energy workouts that combine strength, endurance, and mobility for a full-body training experience.

COMMUNITY & ACCOUNTABILITY

Train alongside a supportive group, stay motivated, and push yourself further in an encouraging environment.

PERFORMANCE TRACKING

Regular assessments help measure progress, ensuring you stay on track and continue improving.

Injury Prevention

Learn proper technique to stay safe and get stronger with guidance from our expert trainers and the best equipment.

PREMIUM FACILITIES

Train in a modern, fully equipped gym featuring private training spaces, advanced recovery tools, and top-tier equipment for every fitness level.

GROUP Training:

Tailored to Your Goals

We offer a fun, supportive environment with expert-led sessions designed for all fitness levels and a well-rounded workout.

Benefits
  • Expert-Led Sessions:  
    Our certified trainers guide you through each class, ensuring proper form and technique.
  • Variety of Classes:  
    From strength training to mobility and stability, there's a class to suit every interest and goal.
  • Community Support:  
    Engage with a community of like-minded individuals, fostering motivation and accountability.
  • Flexible Scheduling:  
    Multiple class times are available to fit your busy lifestyle.
Eligible Memberships
  • Personal or Partner Training (minimum of one session per week).
  • Monthly or Annual Gym Memberships.
  • 2x Drop-in or 10x Drop-in packs.
Group Training

HOW TO JOIN

For Current Members:

  • Log in to the Custom Fit Gym app.
  • Click "Book Classes" on the homepage.
  • Select your desired class(es).
  • Attend and check in with the instructor.

For New Members:

  • Download our gym app:
  • Open the app and click "Join Club."
  • Complete your profile and select an eligible membership.
  • Once your membership is active, book your class.
  • Attend and check in with the instructor.

Class Descriptions

Posture, Mobility, & Stability

Melissa Yu

Are you tired of living with persistent pain in your neck, shoulders, or lower back? In this class, you will learn different techniques in how to correct forward head posture, rounded shoulders, slouched or hunched backs, etc.

Learn how to mobilize and stabilize different joints in your body along with different exercises to strengthen core, glutes, and hamstrings to support better rib cage and pelvic alignment. Let’s improve your posture, alleviate pain, and reclaim your life today!

Bars and Bells

Isaac Kolberg

Bars and Bells brings together barbells, kettlebells, and dumbbells in a dynamic group class designed to build strength, improve conditioning, and elevate overall fitness. With a focus on functional bodybuilding, this class is tailored to enhance athletic performance and support total well-being.

Each session is carefully programmed to meet you where you are, helping you push your limits safely while maximizing muscle growth and metabolic health. Expect a strategic, results-driven workout that challenges and empowers you.

Kettlebell Fundamentals

Pete

Kettlebell Fundamentals is all about mastering the essentials of hardstyle kettlebell training in a step-by-step approach. Each session focuses on perfecting foundational movements, starting with RDLs, goblet squats, and bracing, before progressing to advanced techniques such as swings, presses, and Turkish Get Ups.

With movement mechanics as the priority, this class ensures you build strength, control, and confidence with every step. Whether you’re new to kettlebells or refining your skills, this workout balances technique and intensity for lasting results.

The Control Room

Leo

Take control of your strength and movement in The Control Room, a dynamic circuit-style class designed to keep you moving and challenged. With controlled tempo work at its core, this class focuses on building strength, stability, and endurance without the need for shared equipment.

Perfect for all fitness levels, The Control Room ensures a seamless flow as you work through thoughtfully designed stations that target every muscle group.

Yoga Power Flow + Beats

Colin

Elevate your practice with a power morning flow that blends fluid movement with focused strength-building poses. This class combines dynamic vinyasa flows with strength-building poses, core work, and powerful movements designed to build endurance and stability.

Move with purpose, hold with intention, and let the music drive your flow as you cultivate strength and balance.

The Stretch Class You Need

MYA

Unlock better movement, recover faster, and feel your best with The Stretch Class You Need. This guided session focuses on mobility, flexibility, and deep recovery, helping you improve range of motion, reduce muscle tension, and prevent injury. Whether you’re an athlete, a weekend warrior, or just looking to move pain-free, this class is designed to help you feel looser, stronger, and more balanced.

Perfect as a standalone recovery session or the ideal cool-down after Run Club.

Group Training

About the trainers

Melissa Yu, CMT. CSCS

I hold a degree in Exercise Biology from UC Davis (2014) and earned my massage license from the San Francisco School of Massage (2017). As a certified massage therapist and NSCA strength & conditioning specialist, I specialize in strength building, mobility, and injury recovery.

I’ve worked with a diverse clientele, from corporate professionals to elite athletes, using soft tissue mobilization and corrective exercises to improve movement and performance. My approach is functional and adaptable, ensuring clients achieve lasting success. Outside of work, I enjoy boxing, watching sports, and high-energy group classes.

Certifications/Education

  • UC Davis - B.A. Exercise Biology
  • NSCA Certified Strength and Conditioning Specialist (CSCS)
  • CAMTC Certified Massage Therapist- San Francisco School of Massage
  • National Personal Training Institute (NPTI)
  • NASM Certified Personal Trainer (CPT)
  • Functional Range Conditioning (FRC)
  • Functional Range Assessment (FRA)
  • Functional Range Strength Coach (FRSC)
  • StickMobility Level 2
  • DBC Level 1
  • Functional Movement System (FMS)
  • SportStretch® certified
  • Rocktape FMT- Myofascial Cupping Practitioner
  • Instrument Assisted Soft Tissue Mobilization (IASTM)
  • Myofascial Decompression- Cupping Therapy Level 2
  • NASM Corrective Exercise Specialist (CES)
  • KILO Advanced Strategies to Program Design/Applied Exercise Technique
  • Dynamic Neuromuscular Stabilization (DNS) Exercise pt1

Isaac Kolberg

Director of Assisted Stretching

Whether you are chasing a dream physique, fluid movement, or the foundation to crush any workout, I'm here to help you get there.
I specialize in functional bodybuilding, sculpting not just aesthetics, but the power and agility of a true athlete. We'll build lean muscle mass through movements that mimic real-world function, leaving you strong and ready to tackle anything life throws your way.

As an ISSA-certified personal trainer and pain-free performance + hip specialist, I prioritize mobility and corrective exercises. My toolbox includes assisted stretching and targeted techniques to unlock your full potential, pain-free. My in-depth understanding of the connection between hip health and overall performance will guide you to long lasting range of motion.

Certifications/Education

  • International Sports Science Association  (ISSA) - Certified Personal Trainer
  • International Sports Science Association  (ISSA) - Hip Specialist
  • Pain-free Performance Specialist Certified (PPSC)
  • Functional Movement Training (FMT) - Rock Tape Cupping Certified

Peter Fonteneau

Personal Trainer / DEXA Technician

I started my fitness journey like many 15-year-olds in San Diego—hitting the gym to build muscle for the beach. What began as a hobby became a lifelong passion, leading me to earn a Kinesiology degree from Sonoma State University and dedicate my career to health, fitness, and movement.

With 10 years of experience, I’ve worked in gyms, rehab clinics, athletic training, corporate fitness, and kettlebell specialization. My approach is individualized and data-driven, focusing on movement, strength, and long-term behavior change. I believe in finding the right path for each client, ensuring sustainable progress through testing, tracking, and personalized training—all while keeping it fun!

Certifications/Education

  • Sonoma State University - Bachelors of Kinesiology
  • University of California San Diego - Certified Bone Densitometry Technologist (CBDT)

Leo Kaiser

Personal Trainer / Sales Manager

Hi, I’m Leo Kaiser, your personal trainer at Custom Fit. I specialize in lean muscle building, longevity, mobility, flexibility, fat loss, and making fitness fun through gamification. At Custom Fit, I tailor each workout to your unique goals, ensuring you get the most effective and efficient training. My focus is on creating lasting habits for lifelong health, blending strength training, cardio, and flexibility work. I believe fitness should be enjoyable, so I turn workouts into engaging activities to keep you motivated. As your coach and partner, I'm committed to your success and overcoming any obstacles together. Join me at Custom Fit, and let's make your journey to a healthier, fitter, and happier you a reality.

What Our Clients Say

“I really enjoy that my wife and I can go in for couples sessions. We love working out together, and Evan makes it really fun for both of us, even though our goals are different.”

Chris M.

“Awesome experience working with Evan & team at Custom Fit SF for partner training. The gym is conveniently located, clean, well-organized and super functional for strength and circuit workouts. Lots of fun equipment to mix up workouts (sled, battle ropes, kettlebells, etc.) and for recovery (massage guns, foam rollers, etc.).”

James H.

“Fantastic studio gym that has everything you need and no crowds. I've been working with a fantastic trainer (Lu Green) for 7-8 months and I could not be happier with the progress. All the staff/trainers at the gym have been nice and helpful, and do a great job of creating a safe and hardworking environment for everyone.”

Erik S.

“I bought a pack of 20 sessions here and it was definitely worth it. +1 on the review below that it's a very unpretentious atmosphere and a great space (and very clean).”“I bought a pack of 20 sessions here and it was definitely worth it. +1 on the review below that it's a very unpretentious atmosphere and a great space (and very clean).” “I bought a pack of 20 sessions here and it was definitely worth it. +1 on the review below that it's a very unpretentious atmosphere and a great space (and very clean).”

Eric T.

“This is easily the best gym you can find in San Francisco. They have all the equipment I need, it's never busy and the location is very convenient.”

Alexander T.

“I wish I could say I don't need a personal trainer but I do. Fortunately, the quick results to my middle aged, mother of three, too much sugar body have kept me motivated. My program works, the trainer is excellent, worth the sweat and the cash.”

Joannie N.

“I just started with Custom Fit last week. Two sessions in and I am hooked. I have not been to a gym or had a personal trainer in 20+ years, so I was very nervous about it considering that I am fairly unfit. I've partnered up with Anthony Dandrea as my trainer and it's been nothing short of amazing. The facilities are great.”

Rory G.

READY TO TRAIN TOGETHER?

High-energy, coach-led group training designed to build strength, endurance, and mobility—with motivation and community support.

Book Today

FAq

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