Thanks about the info on Excel.
Yah, yah. I'm not a skinny runner, but even then frens tell me i'm
underweight and keep telling me i need to eat more 
I used to have something like a v-shape body, but my
arms have gone skinny and flabby on me and my pecs and chest, eer,
i guess it kinda shrinked a bit. Looking to do more weight and
resistance training after the marathon. This i will do but shall
not give up runnig. I love it! 
