I know you both said that you are eating a healthy diet. Does it consist of enough protein too? Legumes are excellent energy food.
It sounds too like it could be a sinus thing. That could make you feel really dizzy.
Do you all drink much soda/diet soda or diet drinks? Those are all terrible for you. Some people can drink them all the time and it doesn't do anything to them and with some people, just a little bit can have a big effect.
If my sister just has a piece of gum that has aspartame in it it gives her a headache.
Well, didn't mean to go off on that. You may not even consume any. It's just a thought.
I know too that if I happen to eat a large amount of food or certain types of food before bed it really disturbs my sleep.
Are you going through anything terribly stressful? That REALLY effects my healthy badly when I go through something bad.
It sounds as though drinking a little helps. Maybe you could have a couple ounces of wine before bed. (?)
You get exercise which is great and you are eating well. Make sure that you get enough protein. You'd be surprised at how much the body gets effected by not having enough; eggs, tuna, beans and yogurt are all excellent ways to get it.
I went through something very familiar recently. I was feeling so so bad physically. I found that my thyroid was a little bit underactive so I started eating some certain things I found that I was greatly lacking and took certain vitamins for it.
I now have my energy back and am back to normal. I know that it can take trial and error where this is concerned like, maybe it's something that you eat that really effects you. Some people are just a lot more sensitive than others with certain foods.
Well, hope this helps.