Mighty healthy people: do you have a more sensitive organ/body part anyway? :)

I think I am pretty damn healthy (being into health topics a lot, so I assume I know it pretty good... ~lays ears blushy), but my, my heart tends to bother me once in a while, and I also get pretty sick and weak when am not well-rested, well-fed, in hot weather, and all the rest when something is lacking... I also am the psychosomatic type, so my mind, stress, emotions effect my well being a lot!

Diabetes is in my family so I assume that's why I have these somewhat minor problems...

What about you, pretty damn healthy of the ladies and gentlemen?