I have been practicing yoga for 16 years and qi gong for 4 years, so I am not a stranger to the concept of meditation. Yet, a standard sitting meditation, guided or not, does not seem to do anything for me. Sometimes I fall asleep but that's about it. The only time when I feel that my brain clears of stress and anxiety is when I go hiking or swimming or just have a yoga or qi gong practice. Somehow, the rhythm and monotony of repetitive movements relaxes me. But is it enough? But I never had epiphanies or physical effects like nausea or uncontrolled body movements or hearing sounds etc. that are considered outcomes of good meditation after my hikes or yoga practices, let alone formal meditations. Am I missing something? Advice would be greatly appreciated.