(Title image: Photo by Alexander Krivitskiy on Unsplash)
As my family takes some time to grieve the passing of a family member, I have been using pranayama (breathwork) to help with the broad range of emotions that such situations elicit.
I came across an excellent meditation by teacher Jeff Warren on the Calm app in which he pairs visualization with breathwork as a way of modifying your energy states.

(Photo by Jez Timms on Unsplash)
It works with the natural ability of inhales to quicken your heartrate and bring up your energy levels and exhales to calm the nervous system and elicit the relaxation response. This is my version of what he instructed (his actual guidance may have been a little different):
To increase energy:
Breath ~ Extended, intentional inhales fully filling the lungs followed by shorter, sharper, quicker exhales. Five such breaths followed by natural breath, then bringing attention to your current state. Important: stop if becoming lightheaded or short of breath. This should increase your energy, not overwhelm or wear you out!
Visualization ~ Imagine sparks of energy rising up from the earth and entering your body, into the fingertips and soles of the feet, coalescing in your core, then shooting upwards towards your head and skyward from your crown. Imagine the sensation of energy coursing through your entire body, and a sense of lightness and bouyancy, as if your body is charged and driving itself.
To come into calm:
Breath ~ Four-count inhales through the nose breathing into the diaphragm followed by 6-count extended exhales through pursed lips. Five of these breaths then moving into your natural breath, noticing the stillness. If available to you, extend the exhales to eight counts. This helps elicit the “relaxation response”.
Visualization ~ Imagine heat and sparks draining down from your body, into the earth. Feel a coolness washing over you, notice a solid foundation beneath you. There is a slowing and steadiness, a pleasant grounding and a clearing of the ears. Notice the sensations of your surroundings in the present moment.

(Photo by Victoria Tronina on Unsplash)
Quite honestly, I rarely need to increase my energy levels due the the ability of my parasympathetic nervous system to get activated quickly. If I am feeling fatigued, I don’t do breathwork to rev myself up. More likely, I will exercise…or I’ll respect the fact that my body is telling me that rest is needed and will respond accordingly.
On the other hand, I make frequent and liberal use of calming breaths and find that my ability to handle difficult emotions has improved because of it. Of course, I still struggle from time to time, but that is why this type of work is called a “practice.”
I hope these help you too!