Breathwork
Resource to support breathwork. NB I have included resources where the breath is observed rather than modified within mindfulness.
6 Resources in Breathwork

4-7-8 breathing
Breathe in for 4, hold for 7 and out for 8.

Box breathing
Box breathing is a simple breathing technique where you breathe in - hold - out - hold for the same amount of time

Breathwrk app
App providing breathing exercises

Calm app
A meditation and sleep app

Diaphragmatic breathing
Diaphragmatic breathing is a technique where you consciously recruit your diaphragm, in order to efficiently fill your lungs.

Physiological sigh
This technique of a double inbreath, followed by a slow outbreath, can help calm us down in the moment.