Surfing is not only great for the body, but it helps train the brain as you have to be concentrating hard while doing it.
That's a good point. And just being out on the ocean makes me feel great.
Not only does surfing improve your cardiovascular health, but it gives you some Vitamin D which is super important for regulating the amount of calcium in your blood.
Cardio for sure, that's what I'm trying to build up. I didn't realize how hard it was just to puddle out. And my arm muscles need to get stronger.
There's plenty of ways to increase arm strength without using equipment, arm circles, planks and pushups are great for increasing strength. 
I will look into that. I want to stay active and healthy and since we live near the beach, why not take up surfing, right? 
Yes, keeping healthy is so important, doing some exercises at the beach would be a great way to get healthy, the uneven, sinking sand makes your muscles work harder to maintain balance. 
We are fortunate to have great weather and beach. I will take advantage of that. It makes me feel happy too.
They are studying the effects of being near water on the brain and it is a bunch of positives about how we are wired to feel more peaceful near water.
I can definitely attest to that. I don't know the science behind it but I always feel calmer and happier when I'm near the water.