Juan
Castro
- Strength & Conditioning
- Strength Training
- Bodybuilding
- Hypertrophy / Muscle Building
- Body Recomposition
- Fat Loss / Weight Loss
- Athletic Performance
- Sports Conditioning
- Functional Fitness
- Nutrition Training
- Women's Strength
- Women's Fitness
- Youth Athletic Development
- Men's Transformation (40+)
- Lifestyle & Longevity
- Mindset Training
- Metabolic Conditioning
- Group / Bootcamp
- General Personal Training
Hi, I'm Coach Castro. I'm a Personal Trainer and Natural Men's Physique Pro with 15 years of experience helping people transform their bodies, improve their health, and build lifestyles they can actually maintain. I specialize in fat loss, body recomposition, nutrition, and overall health and wellness, combining proven training methods with an in depth understanding of the science behind nutrition and body composition. As a Natural Men's Physique Pro, I understand firsthand what it takes to build muscle, reduce body fat, and completely transform your physique. My approach isn't about extremes, quick fixes, or temporary results. I believe your training and nutrition should be personalized around your body, your goals, and your lifestyle. Whether your goal is to lose weight, build lean muscle, improve your health, or completely change your body composition, I'm here to provide the training, nutritional guidance, accountability, and education you need to create lasting results. I don't just help you reach your goals. I empower you, motivate you, and take your mindset to a higher level. When you become part of my team, we have one expectation: results. We set the standard high and we put in the work.
Specialties
Certifications
- NASM-CPT
- CPR/AED Certified
Trinity Training Facility · West Covina, CA
Strength is the foundation everything else stacks on. Trinity's strength & conditioning trainers build athletes, professionals, and lifelong residents who want to move heavy, recover hard, and keep doing it for decades.
01
ASSESSMENT FIRST
Movement screen, training history, current lifts. Your trainer builds the program around your body — not a template they hand to every client.
02
PROGRESSIVE OVERLOAD THAT HOLDS UP
Programmed cycles with deloads built in. You'll see the numbers move week over week without burning out.
03
CONDITIONING THAT DOESN'T KILL YOUR LIFTS
Energy-system work paired with strength training, not against it. Capacity grows. Recovery improves. Strength stays.
04
TRAINING ON THE FLOOR
Hands-on cues, video review, real-time form correction. Every session has a trainer who's watching.
Who Juan’s clients tend to be
- Lifters chasing real PRs — not gym numbers
- Athletes whose sport demands repeatable power
- Professionals returning to the iron after years away
- Anyone tired of training without a program
Where Juan Trains
THE ROOMS JUAN
WORKS OUT OF.
One private facility at 1705 W Garvey Ave N, open 24/7 by appointment. Sessions with Juan move through the rooms the program calls for.
Room 01
The Floor
Strength & conditioning. Panatta, Atlantis, Newtech, Booty Builder.
Room 04
The Cardio Zone
Conditioning with a purpose. No TV wall, no line for a machine.
Room 03
The Turf
Sleds, carries, sprints. Functional work with room to move.
+All nine rooms
The Floor, Boxing Area, Turf, Cardio Zone, Private Studio, Sauna, Massage, Peptide, Holy Macros.
How It Works
NO MEMBERSHIP.
NO CONTRACT.
Trinity is a private training facility, not a gym you join. You book Juan; Juan books the floor.
01
FREE INTRO
Use the form below or call 626-430-7695. Juan reaches out within 24 hours.
02
WALK THE FLOOR
Goals, history, schedule, a movement screen, and a tour of the rooms your program will use.
03
GET YOUR NUMBER
Juan sets their own per-session and package rate and quotes it directly. You pay for sessions, nothing else.
04
TRAIN 24/7
Every session is an appointment. The building is open around the clock, so 5am and 11pm both work.
Train With Juan
BOOK YOUR
FIRST SESSION.
Drop your info. Juan (or our team on their behalf) will reach out within 24 hours to schedule your first session at Trinity in West Covina.
-
01 Where does Juan Castro train clients?
Juan Castro trains clients at Trinity Training West Covina, 1705 W Garvey Ave N, West Covina, CA 91790.
-
02 What does Juan Castro specialize in?
Juan Castro's training focus is Strength & Conditioning, Strength Training, Bodybuilding, Hypertrophy / Muscle Building, Body Recomposition, Fat Loss / Weight Loss, Athletic Performance, Sports Conditioning, Functional Fitness, Nutrition Training, Women's Strength, Women's Fitness, Youth Athletic Development, Men's Transformation (40+), Lifestyle & Longevity, Mindset Training, Metabolic Conditioning, Group / Bootcamp, General Personal Training.
-
03 How do I book Juan Castro?
Use the form on this page, or call Trinity at 626-430-7695.
-
04 What certifications does Juan Castro hold?
Juan Castro is credentialed in NASM-CPT, CPR/AED Certified.
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