So rarely I get this thing. My heart beats normally, but then there’s 1 heartbeat that hits way harder than the rest, and for a split second i feel like im gonna pass out, and my breathing and hearing and vision are affected. What is it?

I’ve been told it is average but I don’t know if average translates to healthy. Should I try to lower it through more exercise? I already exercise 4-5 times a week (both cardio and weights).
I wanted to add that I’m a 41 year old female, and this has been my heart rate since my 20s - when I started keeping track.

Like today
http://www.earthcam.com/usa/florida/miamibeach/?cam=miamibeach2
the water is very dirty…Why that?
Pollution?

I am buying some beats pro and when I get them I want to check if they are real or fake, can someone tell me how to check?

Remember, Beats Pro, not studios, tours, etc.

I’d like to improve a certain trait in my personality which i seem to lack, like social skills;
is this possible to improve through isochronic or binaural beats?
no answers unrelated please.