If you see this before you leave - I hope you'll find some good YouTube videos on Deep Breathing.
There are soooo many variations.
One is military tactical breathing, 4-4-8, or something like that.... my physical therapist suggested in for six, out for six, but my niece (a counselor) sticks to the "exhale twice as long as the inhale" thing.
Happy Trails!
I'll be thinking of you. Fasting, hiking, meditating, deep breathing, connecting.
If you have them by now, your Wands of Horus...