How to overtrain on your commute.....

overtraining you say? yes but of course and why not? it's fun and available for everyone, it makes you nice and slow in races and tired on evenings.
and now for the love of this little graph of my commute to work, tells you how exactly I over train like a looser.

Thin red = Heart Rate
Blue = Speed Mph
Thick Red = Altitude Ft.