Meet Juan: Your Expert Personal Trainer in St Albans & Harpenden

With over 10 years of experience, I provide expert mobile personal training and online coaching across St Albans, Harpenden and Hertfordshire. Whether your goal is to lose weight, build strength, improve mobility, reduce back pain, or regain fitness after injury, I create personalised programmes designed around your lifestyle, ability and location.
Train at home, outdoors or online;  with a coach who keeps you motivated, accountable and progressing every week.

St Albans personal trainer Juan demonstrating a fitness exercise.

About Me: Juan, Founder of JSM Fitness

Hi, I’m Juan, founder of JSM Fitness, a certified personal trainer in St Albans, and former semi‑professional gymnast. After more than a decade in the fitness industry, I’ve helped clients across St Albans, Harpenden, and Hertfordshire transform their health through structured training programmes, tailored nutrition and long term support.
My coaching style is personalised, science based and results driven. 

I focus on:

My goal is simple: help you achieve long term results in a way that fits your lifestyle.

Why Train With Me?


My Background
Before becoming a personal trainer in St Albans, I spent over 10 years working in financial services in London. Fitness has always been my passion and today I dedicate my career to helping people transform their health with personalised programmes designed for long term success.

My Qualifications & Certifications
I believe in continuous learning to provide the best training methods for my clients.

Here are my professional qualifications:

  • Level 4 Physical Activity and Lifestyle Strategies for Managing Low Back Pain  (accredited by Active IQ)

  • Level 3 Certificate in Personal Training (accredited by Active IQ)

  • Behaviour Change Specialist (accredited by NASM)

  • Practical Pilates

    (accredited by AFAA)

  • SAQ Speed Agility & Quickness

    (accredited by NASM)

  • Integrated Balance Training (accredited by NASM)

  • Pre & Post Natal

    (accredited by Active IQ)

  • Level 3 Diploma in Exercise Referral

  • Kettlebell Training Instructor 

  • ViPR Instructor

  • Nutritional Advice for Physical Activity Certificate

  • Emergency First Aid Certificate

These certifications allow me to support clients with a wide range of goals; from fat loss and strength training to back pain management and injury recovery.

Ready to Start Your Fitness Journey?
Whether you need weight loss guidance, strength training, mobility support or a complete fitness reset, I’m here to help.
Call or WhatsApp: 07590 830263
Email:
[email protected]
Enquire Online!
Top mobile fitness coach in St Albans offering home and outdoor training in Harpenden and Hertfordshire.Certified St Albans & Harpenden coach providing personalised weight loss support and tailored nutrition guidance.

Top mobile personal trainer in St Albans offering home fitness training in Harpenden and Hertfordshire.

Certified personal trainer in St Albans and  Harpenden providing weight loss coaching and tailored nutrition advice.

Personal Training in St Albans, Harpenden & Hertfordshire

I provide mobile and online personal training across:

  • St Albans

  • Harpenden

  • Redbourn

  • Wheathampstead

  • Hatfield

  • Hemel Hempstead

  • Kings Langley

  • Leverstock Green

  • Markyate

  • Flamstead

  • Surrounding Hertfordshire areas