Keep Active  Eat Right  Stay Healthy

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Our Goals

Empowering  women to boost their confidence through fitness and by adopting to a healthy lifestyle

Supporting women to have a better understanding about the physical, emotional and phycological challenges of pregnancy

Provide a safe environment where women, mothers feel secure to share their feelings and thoughts freely and can build a support group


awareness of the body-mind connection throughout fitness, yoga, breathing and relaxation for positive birth and parenting 

Our services

Personal training, Fitness classes,  

Yoga classes, Baby massage courses

in-person and online

Slim & Tone Training

Getting in shape shouldn’t be a punishment. It’s an amazing and empowering lifestyle decision that anyone can make. I believe in finding the pleasurable side of fitness; and while there may be a sore muscle or two along the way, the benefits of fitness are worth the challenge. I have developed my training regime by working with a variety of people, and constantly adapting my program to the needs of my new clients.

Bump2Baby Training

This is a very special time in a woman's life.

Our programs will improve your posture, pay special attention to the pelvic floor, positions and breathing techniques for labour and birth.
Postnatal programs and classes will boost your recovery after birth, help to repair the pelvic floor and the core muscles and get you back in shape.

Classes & Course

There is a class for everyone.

Our classes can help you to LOSE WEIGHT, tone up, get fitter.

Maintain your fitness level throughout PREGNANCY, provide relevant information about labour and birth.

Support you to regain your fitness level AFTER BIRTH.

Promote a unique way to connect with your baby and assist you through the transition into motherhood.

Gives an opportunity to socialise with others.  

Client Testimonials

Hear What Others Have to Say


Personal Training


The picture on the left was taken 2 years ago (2016). since than I've lost 30 kg and 3 dress sizes.
Katalin has been my inspiration and motivation on this journey. She helped me understand and start on a healthy lifestyle and supported me emotionally too. 
Increased my confidence tremendously.
I can definitely recommend Katalin as your personal trainer. She will address your personal needs and you'll work together to achieve your goals.
I cannot thank her enough.

Leila Briceva

Pregnancy Yoga


After a week long labour, the baby arrived yesterday afternoon (15.08.2019). She was 6lbs 7ozs. We are both very tired but doing well. Katalin all the stuff with the breathing exercizes got me to 6cm alone. So thank you so much. I can't wait for you to meet her for baby massage.


Postnatal Fitness

Katalin really helped me to regain my strength and muscle tone after giving birth and recover from diastasis recti which I'm very grateful for. If you are looking for someone to support you through pregnancy and with recovery after birth don't look further.



Contact Us

Get in touch and start your fitness journey today.

Bermans Way, London NW10 1SB


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About Us: Kat Fitness

Strength in Body & Mind

Kat Fitness is a London based health and well-being company founded by Katalin Kaszas ,

It provides expert one-to-one training, fitness and yoga classes in person and online.

I am committed to working with women  especially pregnant and postnatal mothers. 

I help them to improve their physical, emotional and mental wellbeing as well as support them through motherhood.

I have excellent client results.

About Kat 

"My work is my passion"

Specialist areas:

  • Pre and Postnatal fitness, Yoga

  • Weight loss

  • Body fat reduction

  • Body confidence

  • Nutritional guidance

  • Baby massage

  • Birth education (NCT), Motherhood 

  • Mindset and motivation

I started my fitness studies while on maternity leave (2012) and I've been working in the field of fitness ever since. I founded Slim&Tone in 2013,  I was working with pregnant and postnatal mums when I realized I had to upgrade my knowledge base. I've got a degree Birth and Beyond NCT (University of Worcester) in 2019.  I became a qualified birth educator, pre-/postnatal yoga and baby massage instructor. Bump2Baby was born then brought together with Slim&Tone under Kat Fitness in 2019. 


"My work is my passion. I get to change lives for a living, which is not only a privilege but incredibly fulfilling and rewarding." 

I have been helping women and mums to reach their health and fitness goals and boost their self-confidence.

I've got excellent feed back from pregnant mothers who have found that exercising during poignancy helped them to have a better birth experience. 

Postpartum mothers also achieved amazing results to speed up their recovery, strengthening their core muscles and have a stronger bond with their baby.

"I firmly believe in the positive benefits fitness brings to all areas of our lives."

Are you ready to make a change?

Contact me for more information or book a consultation.

Saturday stretching after a great CobraF