I agree with the dehydration theory, there are lots of us that do not come close to the daily recommended amount of water per day(I myself am guilty)
I'm very pleased to hear that you've ridden the headaches by lowering your Vape temps.
What I do every day...
Instead of reaching for your coffee or energy drinks first thing in the morning, grab a 18oz glass of cold water and "chug" it down .
This kickstarts the Metabolic System for the day , I started feeling "better" in general after employing this routine after only a few days.
In addition;
The Traditional diet does not supply enough Magnesium or Vitamin D, after I started supplementing these 2 essential Vitamins ... The difference is quite noticeable.
I am disabled (Auto-Immune disorder known as Ankylosing Spondylitis)
I also try to get at least 10-20 minutes of sun exposure (More Vitamin D) and take a walk around the block.
**Always check with your Doctor or Pharmacist before taking any Vitamins and/or Supplements **
Hope this helps,all the best,
-Hashtag 46&2