Thanks for all the comments!

I have really loved reading some of the studies, but they seem a little bias in some cases.

I have pushed up my water intake and now that exams are over, i get to sleep and am keeping better track of diet. That really helped with heart rates. Now it is something like 80 average. Which is much better.

I went out on a mock race the other day to try out what a good shot of espresso will do to me on a race day and I really liked it. My endurance seemed best it has been in a while. Again this also I know is realated to how much more sleep I have been getting. My heart rate got high in parts but nothing to out of the normal for when i do my normal trains on those parts.

Great seeing all the posts.

-jared