Meet Juan
Your Expert Personal Trainer in St Albans & Harpenden

With over 10 years of experience, JSM Fitness Top Personal Trainer in St Albans provides expert online and mobile personal training St Albans & Harpenden. Whether your goal is to lose weight, improve mobility, help you with back pain, regain fitness after injury or boost your fitness levels, I create personalised workout programmes tailored to your needs. Train at home, outdoors, or online with JSM Fitness Top Personal Trainer in St Albans, who will keep you motivated and accountable.

St Albans personal trainer Juan demonstrating a fitness exercise.

Hi, I’m Juan, founder of JSM Fitness personal trainer in St Albans. I have a background as a semi-professional gymnast and over 10 years of experience in the fitness industry helping individuals achieve their health and fitness goals through one on one mobile personal training in St Albans and online coaching. I bring passion, motivation, and real results to every client across St Albans, Harpenden, and most of Hertfordshire.

My approach is personalised, science based and results driven. I focus on strength training, fat loss, functional movement, I can also help you with back pain, regain fitness after injury and nutrition to ensure you get sustainable, long term results. Helping you achieve your fitness goals in a way that fits your lifestyle and location.

Why Train With Me?

Let’s build a stronger, healthier you! Book a consultation today!
let's take the first step toward your fitness journey today!
Call me on 07590 830263 for a chat, email me or enquire online

Personal Trainer in St Albans, Harpenden & Surrounding Areas in Hertfordshire


Before becoming a Personal Trainer in St Albans, I spent over 10 years in the financial services industry in London, but fitness has always been my true passion. Now, I dedicate my career to helping people transform their health and fitness with personalised training programs 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


Got more questions?
Let’s talk! Whether you need weight loss guidance, strength training, or just a fitness boost, we’re here to help. Contact me today for a no obligation chat about your goals and how JSM Fitness personal trainer in St Albans can support you.
Call Now or Enquire Online!

Personal Trainer in St Albans, Harpenden & Surrounding Areas in Hertfordshire

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

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Official coach for Rennie Grove Biggest Loser

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Former Land Coach for the Harpenden Swimming Club

CIMSPA Member

CIMSPA Member
Membership no: 1355248