I'm a subscriber to Runners World (thanks for the recurring birthday present James & Amy) and in almost every issue there is a reference to stretching or breathing that draws direct parallels with yoga practice. In last months issue there was a snippet article on the benefits of belly breathing. Taking breath in through the nose and mindfully filling your belly with air, using the diaphragm to fill the lower lobes of your lungs allowing deep, relaxing breathing.
We know this as the first stage of yogic breathing, a practice which encourages control of the mind, body and breath. I used to practice this, pre-lockdown, in the car on my daily commute to the office. Aside from the calming effect, counteracting anxiety and stress, it also has a positive effect on the digestive system.
Contact me for more information on yogic breathing, I'd be happy to share it's incredible benefits with you.