About Mack Parnell
Personal trainer, nutrition graduate and writer on behaviour, habits and health, based in Walthamstow, East London.
I became a personal trainer because I enjoyed training and wanted to help other people feel stronger, fitter and more confident. Over time, I realised the exercise itself was often the straightforward part. The harder part was making it work around jobs, families, stress, setbacks and ordinary life.
My coaching now brings those pieces together: practical personal training, useful nutrition guidance and support with the habits that make consistency possible.
Personal training came first
I didn't begin with a coaching theory and then look for people to apply it to. Personal training came first.
I qualified as a personal trainer and later completed a BSc in Nutrition & Exercise Science. Working one-to-one with clients showed me how different people's starting points, schedules and barriers can be. It also showed me that the best plan isn't necessarily the most impressive one. It's the one a person can understand, use and keep using.
A working life outside fitness
My working life hasn't followed a straight line. I ran a computer graphics business for about ten years, built a handyman and carpentry business, spent years making and DJing music, and I've lived and worked in Thailand, Portugal, Spain, Wales and London.
For a long time I thought training was a joke — something other people did. Getting from there to personal trainer took years, and it happened one small correction at a time, not through a transformation.
So whatever your week looks like, I'm probably not coaching you from theory. There's a decent chance I've lived some version of it.
Why the coaching evolved
Knowing what to do is useful.
It isn't always enough.
As the years went on, I became more interested in why people can understand exercise and nutrition
perfectly well and still struggle to act on it. The more I looked, the more I saw that nobody's routine is
random. Even the patterns people are frustrated with make a kind of sense once you see what's holding them in place.
That led me further into habits, behaviour, my own meditation practice and eventually into writing. Those ideas support the personal training rather than replacing it. Training stays the foundation. The wider coaching is about getting enough space to see your own pattern clearly — because once you can see it, changing it becomes a practical job instead of a fight with yourself
Qualifications and experience
Qualified Personal Trainer
Practical one-to-one coaching, exercise instruction and progressive programme design.
BSc Nutrition & Exercise Science
Degree-level study of exercise, nutrition and the science behind health and performance.
Long-term coaching experience
Years of one-to-one coaching with people at every kind of starting point.
Author of Being Out of Your Mind
A personal exploration of thought, behaviour and the choices that follow. It reflects sustained study and writing, not a clinical qualification.
Outside coaching
Most of my life outside work is family, writing, music, strength training, meditation, practical projects, being outdoors and walking the dog.
I've spent years making and DJing music, and I'm usually building or repairing something. Both have taught me that progress rarely arrives in a straight line. You try something, pay attention, adjust and keep going.
I don't expect anyone to become obsessed with health. The point is to use training and better habits to support the rest of life — not to replace it.
Work with someone who understands the whole picture
You might want straightforward personal training. You might also want help with nutrition, consistency or the habits around it. We can begin with what you need now and keep the process practical.
The first step is a relaxed, no-obligation conversation.