Hello sir... As per my daily routine today I start my running with a bricks walk of 10 min, starting 1st 2 round of brick walk I feel pain on the left corner of chest, but after 2-3 round pain disappeared now I run, running after 600 meter mild pain on the right side chest but it would disappear after continuous running.... So we rulled out our mind, after running I climbed off the stairs (14 stair each round) up and down, doing 10 rounds in 2 min and no pain happened So the pain in running is muscle pain or something else ? Is my heart healthy or not? My ecg, echo done in the month of April was normal My TMT done on 20 Aug 2022 negative. Brick walk daily for 50 min and run for 10 min ..