Do the half-salamander exercise for better breathing

Sit or stand in a comfortable position.

Without turning your head, let your eyes look to the right.

Continuing to face straight forward.
Tilt your head to the right so that your right ear moves closer to your right shoulder without lifting the shoulder to meet it.

Hold your head in this position for thirty to sixty seconds.

Then let your head come back up to its neutral position and shift your eyes to look forward again.

Now do the same on the other side.
Let your eyes look to the left, and then side-bend your head to the left. After thirty to sixty seconds, return your head to an upright position and your eyes to a forward direction.