Is my heart literally weakining?

When I was 12-16 I was able to not only consume over 3,000 calories in 1 sitting but I'd never bloat or have any type of heart issues like skipped bests or fast pacing

I was even able to go for a few runs after eating without any trouble

Now that I'm 24
anytime that I eat not only do I bloat slightly but I also feel tight chest pains & my heart just bests much faster & moderate fatigue

I feel as if my heart is getting weaker
Is my heart literally weakining?
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