Originally Posted by
*****3nin.vend3t
Doing treadmill & cycling together is know to damage the rectus femoris. The length-tension relationships are all wrong. That muscle will shorten during cycling, lengthen during running. Recipe for disaster.
Where do you come up with this nonsense. How is running on a treadmill different than running outside? Lots of people manage to run and bike without damaging any muscles.