Researchers can now see actual thought processes by measuring the increases of blood flow and oxygen to different sections of the brain.
i find this topic very interesting and know a lot about it,, so if you have any further questions feel free to let me know id love to help.
:)
Answer:
I think the answer is energy or body warmth/temperature
Well. You might have already thought of this but you can eat healthy foods like greens. And you can also exercise like stretching or going out for a 30 minutes run every day. These two thing do help your emun system witch fights off diseases. Also helpes you not get them as easaly
Pain, is the answer you are looking for.
It isn't heart healthy. That's something that's not true.
