Mental fitness includes techniques like meditation, yoga, and mindfulness that have mental and physical benefits. Research shows these practices can reduce anxiety and heart disease, while increasing focus, productivity and social connection. Studies found Transcendental Meditation lowered stress and heart attack risk. It also boosted job performance and satisfaction. Byron Katie's "The Work" uses questioning to change negative thoughts. Ken Wilber's 3-2-1 Shadow technique helps integrate unconscious emotions through third, second, and first person perspectives.