Breathing is something every runner does thousands of times on every run — yet it’s something most of us never think about.

In this episode of the UKRunChat Podcast, Michelle speaks with breathing coach and former professional rugby player David 'Jacko' Jackson about how improving the way we breathe can impact running efficiency, mobility, and performance.

After a serious brain injury ended his rugby career, Jacko began exploring breathing as a tool for improving brain health and regulating the nervous system. That journey eventually led him to become a Master Oxygen Advantage coach and write his new book, Breathe Smarter Run Stronger.

In this conversation, we explore how breathing mechanics affect everything from running economy and perceived effort to hip mobility and race-day nerves.

• Why breathing is often overlooked in running training
• The difference between how elite runners breathe vs amateur runners
• When nose breathing can improve running efficiency
• Why mouth breathing isn’t always the enemy
• The surprising connection between breathing mechanics and hip tightness
• Why tongue posture affects breathing and airway function
• How breathing rate affects perceived effort during a run
• Building carbon dioxide tolerance to improve endurance
• Using breathing strategies to stay relaxed during races
• Jacko’s ambitious Mission IN-possible challenge to run 200 marathons in 100 days

Jacko’s book Breathe Smarter Run Stronger is available now.  Published March 12th 2026.

Follow @bloomsburyoutdoors

Follow Jacko on @thebreathrunningcoach