Is this a heart attack?

Stay hydrated, take a B-complex, I personally prefer Pedialyte over Gatorade (too much sugar), but to each their own.

I am prone to heart palpitations when I get dehydrated, and it is scary, and I went to the ER this past spring and spent the night being monitored in the cardiac unit. Minor damage to heart muscle (based on blood biomarkers), but no other abnormalities. During that unpleasant phone call to Mom after the Docs informed me I was staying overnight and having tests done the next day, Mom told me that palpitations runs in the family.

Since then, I drink water after having booze, I completely stopped the pre-workout stimulant beverages, and things have been fine.