"Mental calmness" refers to a state of tranquility and peace in our thoughts and emotions. It means having a relaxed and clear mind, without feeling stressed or overwhelmed. Full definition
In the modern world, there may be times when wickedness is so overwhelming that it is neither possible nor advisable for yogis to strive to retain a completely undisturbed mental calmness. (gatheryoga.com)
Floor sitting also helps promote mental calmness, soothes frazzled nerves and is said to aid one's creative imagination. (mindbodygreen.com)
Yoga also fosters mental calmness, clarity, and self - acceptance, giving you the tools to combat anxiety and feelings of inadequacy. (verywellfit.com)