Gray Caws

Personal Trainer | Chi Running Coach | Oxygen Advantage Instructor

I discovered a passion for fitness in 2004. I became a regular runner and after a couple of years struggling with technique, I eventually read the Chi Running book by Danny Dreyer. By following the exercises in the book I found that my running efficiency improved and that the niggles that were often holding me back were becoming less of an issue. In May 2010 I attended a workshop with Danny. This encouraged me to train to become a Certified Chi Running Instructor.

In 2012 I qualified as a Personal Trainer and Chi Running and Chi Walking Instructor. During the Chi Running certification process I assisted Master instructors Marion Meesters in Amsterdam and Catherina McKiernan (winner of Berlin, London and Amsterdam marathons and Irish marathon record holder) in Dublin.

Realising the importance of exercise not only for fitness but for health and general well-being, I decided to study for a Level 3 Diploma in Exercise Referral and a Level 4 Certificate in Specialist Exercise (Exercise for the Management of Lower Back Pain).

In 2014 I was appointed Master Instructor and Director of Chi Running UK & Ireland and I am now responsible for the management and development of Chi Running across this region.

In 2016 I trained as an Oxygen Advantage Instructor with Patrick McKeown and became the first UK certified instructor, teaching a programme of breathing exercises that help to maximise oxygen carrying capacity and delivery for aerobic and anaerobic improvement.

I work with clients on a 1-2-1 and also hold regular Chi Running and Oxygen Advantage workshops in London, across the UK and Europe. I also train new instructors in the Chi Running and Oxygen Advantage methods. In April of this year I visited Oman to deliver Chi Running Performance workshops incorporating the Oxygen Advantage technique. In June I traveled to the US to work with Danny Dreyer at a week-long Chi Running retreat in the Kripalu Yoga Centre, Massachusetts.

For my continued professional development I see a Personal Trainer weekly and keep updated on current health, fitness and training developments. My current training includes body-weight strength training to compliment my running programme. I also train barefoot and in minimalist shoes for both my running and resistance work. I believe this promotes better posture, proprioception, and balance, helping develop stronger core muscles and natural movement.

I have run marathons, half marathons, numerous 10ks and my first venture into ultras was the Royal Parks Ultra Marathon in 2014.


  • Level 4 Active IQ Certificate in Specialist Exercise (Management of Lower Back Pain)
  • Active IQ Level 3 Certificate in Advanced Personal Training
  • Active IQ Level 3 Diploma in Exercise Referral
  • Master Chi Running Instructor
  • Master Chi Walking Instructor
  • Oxygen Advantage Instructor
  • Master Kettlebell Instructor
  • Spiral Stabilisation Instructor
  • Active IQ Level 2 Certificate in Gym Instruction
  • Nutritional adviser

Call 07515 385593