The Fitness Girl NI

Personal Training, Online Coaching & Nutrition Plans

Start Your Journey
See how online coaching works
Online Coaching, Reimagined

Not a PDF. Not a template.
Your own coaching platform.

Most online coaches send you a spreadsheet and a WhatsApp group. Every online client of The Fitness Girl NI gets something built specifically for them: a private training app with personalised workouts, meal plans, progress tracking and weekly check-ins — all reviewed and adjusted by Sarah, not an algorithm.

Log your sets mid-workout, see your personal bests the moment you beat them, and know exactly what you lifted last time before you even walk into the gym. It's the same platform in-person clients use — built to keep you accountable, wherever you're training.

Apply For Online Coaching
Welcome back 👋
Wednesday, Leg Day
Goal Progress
68% to goal
Today's Workout
Squat · Leg Press · Lunges
🏆
New PB! Squat 80kg × 6
Beat your last record
12
Day Streak
4
This Week

Personalised Workouts

Every session is programmed around your goals — sets, reps, rest and supersets included, not a generic template pulled off the shelf.

Track Every Personal Best

Log your sets from your phone mid-workout, see what you lifted last time before you start, and get a celebration the moment you set a new PB.

Meal Plans & Macros

Personalised nutrition targets and meal plans, with your daily intake tracked automatically against your calorie and macro goals.

Progress Photos & Stats

Upload progress photos, track your weight and measurements, and compare before-and-after side by side as the weeks go by.

Weekly Check-Ins

Every week, Sarah personally reviews your check-in — energy, sleep, nutrition and more — and adjusts your plan accordingly.

Your Progress, Anywhere

Streaks, goal progress, today's plan at a glance — everything you need to stay accountable, right from your phone.

This is what makes online coaching with The Fitness Girl NI different.

Start Your Application

Sarah Mawhinney

Hey! My names Sarah aka TheFitnessGirlNI. Over the last 7 years I've helped transform not just the bodies of dozens of local hard working people, but also helped them develop their mindset and helped them to become their own personal trainer and help them continue their journey even after they are ready to leave my guidance.

As a personal trainer, online coach and mentor I offer 1-1 sessions based in a private studio in Newtownards, North Down, along with mobile training sessions in the comfort of your own home with equipment supplied and brought to you by me and for those who live a super busy lifestyle my online only coaching provides you with structured training programme weekly, check ins and round the clock access to my expertise via Whatsapp both private message and in my dedicated group chat for my online clients, All programmes are personalised to your goals and come with nutritional guidance to help you get the best results possible.

Qualifications: Level 2 Fitness Instructing, Level 3 Personal Training

Sarah Mawhinney

MY SERVICES

1-1 Sessions

Face to face coaching sessions based in a small private gym or from the privacy of your own home. Each session is 1 hour long consisting of verbal and visual guidance of each exercise.

Group Sessions

Small group training consisting of 2-4 members based within the private studio. Focusing on strength and conditioning training.

Online Coaching

Personalised fitness programmes consisting of 4 week blocks, ranging from 3-4 workouts per week. Daily WhatsApp support and guidance along with your personalised nutrition guide.

Diet Plans

One of our monthly nutritional guidance plans with a breakdown of your macronutrients and calorie intake, to help you take control of your diet and improve the outcome of your training.

PRICING

1-1 Sessions

£35
  • Per Session
  • Face-to-Face Coaching
  • Personalised Training Programme
  • Nutritional Guidance
  • WhatsApp Support
Get Started

Mobile Personal Training

£45
  • + Fuel Charge
  • Trains at Your Preferred Location
  • Personalised Training Programme
  • Nutritional Guidance
  • WhatsApp Support
Get Started

Online Coaching

£100
  • Billed Monthly
  • Bespoke Training & Nutrition Plan
  • Daily WhatsApp Support
  • Weekly Check-Ins
  • Track Progress Online
Get Started

CLIENT SUCCESS STORIES

Client

I started with Sarah whilst I was pregnant to keep me fit and focused on a healthy weight gain. 6 months postpartum I was back with Sarah, and with her twice weekly one to one sessions in the comfort of my own home (baby joining in), I had control over my fitness goals, activities and weight loss plan. 6months into my journey I was back to my pre pregnancy weight, but a stronger, fitter and more healthy version. 2yrs later and I’m still enjoying Sarah’s one to one coaching which she has adapted to my ever changing health requirements. A bonus for any mum of young children is my daughter loves her weekly strength training and will hopefully see that looking after self is a lifestyle you deserve. Thank you Sarah x

Client

I started training with Sarah in March 2024. At 43 I was super tired and struggling with hormone imbalances, dare I say peri menopause. I had tried other coaches even one specialising in Peri menopause. I quit I got so overwhelmed it was like a full time job trying to keep up with workouts, steps and feeling like a failure while looking after family and my business. Sarah has taught me this isn’t a quick fix but it’s listening taking advice and realising this is a process and a forever change. looking at photos and scales (which took along time to move) I just can’t believe it. I have so much more energy and my hikes no longer require breaks or inhalers. I am loving coming back to my strongest fittest self and this is down to consistency, weight training and Sarah expert guidance. Highly recommend Sarah as a coach that listens and take a unique approach to each clients needs.

Client

Working with Sarah has been one of the best things I’ve done for myself in years. I was so unhappy before I started with her and struggled with looking in the mirror without becoming upset. Sarah not only taught me how to exercise properly toward goals, and nutrition, but she taught me that all bodies are different and to begin to love the skin I’m in. She always encourages and builds me up and keeps me going when it gets tough. I still have my harder days with self love and body image but Sarah has made them so much easier. 

Client

Since starting with Sarah I feel like I have so much more energy, good within myself, stronger and more confident. Strength training has made me become a better version of myself knowing I am accountable. I like that my training is a routine and to know I am sticking to something for the first time ever. I would highly recommend Sarah as I feel like this has changed my ways for the better and look forward to the future with making more progress.

Client

I haven't been with Sarah that long, just over 2 months or so and I've already noticed a huge change in my body and my confidence. Before starting with Sarah, I was in a slump. I was still trying to eat well and count my calories and I was still trying to go to the gym, but I didn't feel as though anything was working for me anymore. What I love about Sarah is she is always there whenever you need her with constant communication, suggestions, help with workouts, and she does check-ins every few weeks to make sure you are feeling good about the programme. You don't feel like you're doing it alone! As far as food is concerned I don't think I've ever done a programme where I haven't craved food or been hungry at the end of the day. So if you're considering joining with Sarah you won't regret it, I was nervous to take the step but it was the best decision I ever made!

Client

Training with Sarah has been amazing! I started working with her to drop some weight for my wedding in October, and I've already seen incredible results – my wedding dress ended up too big! Sarah keeps every session fresh and engaging, and without her guidance, I don’t think I'd have seen these changes in my body. Thank you, Sarah, for helping me feel my best for my big day! Excited to work on my honeymoon body now!

HEALTH CALCULATORS

BMI Calculator

CONTACT US

We'll get back to you ASAP!

Nendrum Way, Jubilee Rd, Newtownards BT23 4YH
07902 972831
Sarah@thefitnessgirlni.com