Lots of stuff causes dizziness after/during exercise. But if you Google "dizziness after exercise" you'll get 10,000 articles and lame blogs that are basically just copies of one another that all essentially make the same vague blanket statement:
In rare cases, heart conditions can cause dizziness after/during exercise.
But, LOL, not a single one of these articles/lame blogs actually deep dives into what specific heart conditions they are referring to.
So I ask: What specific heart conditions would cause dizziness after/during exercise, and why do they make one dizzy?