B. Metta

Metta is a millennia-old Buddhist compassion and self-compassion
practice that roughly translates as “loving kindness.” Simply put, Metta is
the conscious practice of developing kind intentions toward all beings.
When the brains of dedicated Metta practitioners were examined and tested
by neuroscientists, significant differences came to light. Not only did they
emit deeper brain waves, they also bounced back from stress scenarios
much faster, and they showed particular enhancement in the left frontal lobe
of their cortexes, the “happy region” of the brain.1