Remember when you were a kid and loved being upside down?
You would hook your legs over a high bar of some nature and just hang. Or when you were small enough, you’d have one of your relatives hold you upside down by your feet. It was fun. You enjoyed inversion.
Much like many things from childhood,

The science has show that Nadi Sonham (Alternate Nostril Breathing) can lower blood pressure and pulse rate1, improves manual dexterity2 and has a balancing effect on the functional activity of the left and right hemispheres of the brain3. All that just from breathing!