Originally Posted by
Richard Cranium
There are two components to running performance. Muscular and cardiovascular "rest" is necessary for you to run without experiencing feelings of fatigue.
If you don't feel fresh when you run, and you are not riding hard enough to actually damage or otherwise fatigue your leg muscles, your feelings of fatigue are systemic.
Maybe you're stressed out for some other reason - or you're just really out of shape.
Thanks for talking to me like I have never done anything athletic in my life...I have ran in races for years (it is pretty arrogant to say someone doesn't know what 'rest' is in respect to running). I am asking for help with the physiological effects of biking on long distance running. If you can't help with that, please don't post here again.