Our Mission
Our mission is to help busy dads transform their energy, self-confidence and body shape so that can lead a healthy household and be the best possible example to their kids.
Our Team
Andrew Lahart
I am the owner and head trainer at Defined Fitness. I started my fitness journey over a decade ago qualifying with a BSc in Sports & Exercise Management from University College Dublin. In 2011, I qualified as a personal trainer after attending a specialised course in Dublin City University. And soon after set up my personal training business Defined Fitness.
In 2013 I moved to Perth, Australia working as PT with the Australian Navy cadets, a phenomenal experience.
Upon returning to my hometown of Dublin a year later, I set up my own training facility and Defined Fitness was ready to go to the next level.
Over the following years I have travelled the world picking up qualifications in the fields of:
- Strength & Conditioning so that my clients get the highest level of programming based around their specific needs.
- Nutrition so that my clients can get a personalised plan that will allow them to get the absolute best result from their training and transform their body.
- Physical Therapy so any of my clients who are carrying old injuries can still train in an effective manner.
Mark Cervi
Mark joined Bulletproof Dads as a member in 2016. At that time, he was a typical “pre-BPD lad.” Having been very fit in his youth, playing football and GAA, his work and family life took over. As his playing career came to an end, he noticed that his weight began to creep up.
Having never really done any proper weight training before, he committed to the Bulletproof Dad program and achieved impressive results. His biggest goal was to be a healthy example for his son and more energy for family life.
In 2021, Mark qualified as a personal trainer and strength and conditioning coach. With over 15 years of experience in high-level soccer coaching, he successfully transitioned to coaching in the gym. Additionally, his background as a sports injury therapist led him to work as a full-time coach at Defined Fitness.
He is a fantastic coach, motivating and encouraging all the guys in our Bulletproof Dad sessions, although his gym playlists can be a bit questionable!
Alan Nangle
Similarly, Alan initially joined Bulletproof Dad in 2021 as a client, looking to shed some excess body fat and tone up. He was always active playing with his local football team Howth Celtic. And then with the over 35’s at Lusk United. But his experience with strength training was quite limited.
Having seen the positive impact our structured strength training had on his body shape after joining us, he decided to he wanted to learn more and went on to qualify as a personal trainer. As soon as his qualifications were obtained, he came straight on board with us as a coach.
Given his experience coaching and managing in the football world, he took to it straight away and has been an integral part of the team since.
Why Dads?


Frequently Asked Questions
The gym is located in Unit 6, Redleaf Business Park Turvey Ave Co. Dublin just 2 minutes from Donabate village, only five minutes from Swords and Lusk and approximately 15 minutes from Rush and Malahide.
The gym is open seven days a week running our small group training classes. We run early morning sessions starting from 6.00 am until mid-morning and evening sessions starting from 5.30 pm until late during the week. We also run lunch time sessions on certain days each week. On Saturdays and Sundays, we run sessions from the early morning until mid-morning.
Personal training times are decided between the client and the coach.
The gym operates strictly under small group training or personal training sessions where a coach is present at all times. Classes are operated under a timetable, and you can book in your preferred choice with our simple to use booking app.
Defined Fitness offers the Bulletproof Dad program which is a small group training aimed at Dads. We focus on a blend of structured strength and conditioning training. Our Semi-private framework has a strict cap on numbers so that all your individual needs are catered for, whilst having the motivation of the group around you.
One to one coaching where you will work directly with Andrew on a personal basis building you a personalised weight loss plan utilising the exercise and nutrition options that fit into your current lifestyle.
Defined Fitness offers the Bulletproof Dad program which is a small group training aimed at Dads. We focus on a blend of structured strength and conditioning training. Our Semi-private framework has a strict cap on numbers so that all your individual needs are catered for, whilst having the motivation of the group around you.
One to one coaching where you will work directly with Andrew on a personal basis building you a personalised weight loss plan utilising the exercise and nutrition options that fit into your current lifestyle.
Yes, the gym has two showers available for use by all members.
Yes, free parking is offered just outside the gym building.
The gym has a strength zone which includes dumbbells, barbells, benches, cables and kettlebells.
The gym has a conditioning zone which includes concepts ski and row machines, assault bikes, battle ropes, prowler sled, and slam balls.
The gym also has a recovery room which includes a filtered cold plunge, Finnish sauna and Normatech compression boots.