Chest tightness after running?


have joined athletics club doing 100m sprints. 4 of them , 5 150m. find when stop sprintin, chest tightens , can small amount of oxygen. i'm scared of passing out last time when couldn't breathe extremely light headed. normal?

so have joined athletics club doing 100m sprints. 4 of them , 5 150m. find when stop sprintin, chest tightens , can small amount of oxygen. i'm scared of passing out last time when couldn't breathe extremely light headed. that...


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