Blow up balloons.
You heard me. Get a cheapy pack of 100 and blow up about 20 to 30 in one sitting.
Blowing up balloons is a resistance based exercise for the diaphram, a key muscle not only for breathing, but for overall core strength. If the trunk muscles are weak, the diaphram suffers (and vice versa), as does your breathing…as does your neck and shoulder tension, as does your stress levels….see how all of this is an endless spiral?
Increase your lung capacity. Strengthen the diaphram. Build core strength. Release neck and shoulder tension. Let go of stress easier by breathing deeper.
Seems we have nowhere to go but up….go blow up some balloons.