According to Osho, sensations in the chest during deep meditation—burning, throbbing, even ‘heart‑attack‑like’—often signal the spiritual heart opening behind the physical one. These are echoes as soul-centre petals bloom; initial restlessness matures into peace, silence and overflowing love as mind’s barrier dissolves. Don’t be afraid; stay present and allow it. Yet remain practical: consult a physician to rule out genuine physical issues.
It’s usually your deeper, spiritual heart waking up and spilling into the body; feel it calmly, but see a doctor if unsure.