Who wants to lose weight?

Have more energy?

Lead a healthier and more active lifestyle?

Feel happier and more confident?

Calon Lan Personal Training can help you with all of the above!

My name is Sian Thomas and I am a Personal Trainer in Cardiff and Fat Loss Specialist. I qualified as Master Personal Trainer from the European Institute of Fitness at Lilleshall National Sports Institute, Shropshire and my mission is to help people in the Cardiff area lose weight and to maintain a happier and healthier life through exercise and lifestyle coaching. I offer a personalised service to help each client achieve their individual goals.

Personal Trainer Cardiff

I decided to study personal training to help others transform their lives after having struggled for years myself to lead a healthy lifestyle. I was overweight, unfit and extremely unhealthy throughout my twenties, I had a terrible relationship with food and alcohol and would comfort eat and drink on a daily basis. I made a complete lifestyle change a couple of years ago and am now happier, healthier and fitter than ever! Having realised what a massive difference a healthy diet, exercise and sleep had on my mood, my energy levels, my productivity and my overall happiness I decided that I wanted to share my knowledge with others!

If I can do it then so can you!

If you want to read more of my story then click on the link below and read my blog about how I made the change from comfort eater to Crossfit addict!


Before – extremely unfit and unhealthy!

Me colour

After – 2 1/2 stone lighter & 2 dress sizes smaller!









I offer a mobile personal training service in Cardiff and the surrounding area, and I can train you in the comfort of your own home, garden, workplace or a nearby park. I am also bilingual and can offer training in the medium of Welsh or English.

As a Cardiff personal trainer I aim to make each session challenging as well as enjoyable so that you have fun as well as working hard towards your aims.

I offer one on one training as well as partner and group PT so there is something here to suit all goals and budgets.

I always offer a free consultation to begin with so that we can meet and chat about your fitness levels, your goals and your nutrition. During this time I will also assess your posture and offer advice on how you can improve this with exercise, mobility and stretching techniques. This will help with your overall fitness and injury prevention.

One of the most important things to remember when trying to lose weight is that you will need to make changes to your nutrition. Exercise alone is not enough. I will help you to make positive changes to your food choices that you can maintain long term. There will be no more dieting or calorie counting, you will be re-educated about what’s good and bad and you will be able to eat good, delicious, tasty natural foods that will help you maintain a healthy weight for the rest of your life!

Do you want to make changes to your diet, your fitness and your overall well being? If you want to lose weight, be stronger, faster, fitter, have more energy, and be happier and healthier then give me a call!