Originally Posted by
MichaelW
Its not only the muscle groups that are different for running; the stress you put on various ligaments and tendons is quite different. If you are starting to run after a long period of only cycling you may need a very slow and gradual buildup. Your cardio finess may even work against you since you have to run very gently, very little, for a few weeks to build up the conditioning. It can be very frustrating if your heart and lungs are ready for a five-miler but your feet are not.
I learned this the hard way! I started running last winter when an injury forced me off the bike and I struggled through a few overuse injuries before I realized that my lungs were ready for way more than my feet and legs were.
Also, running is definitely not helping my cycling, but it's fun so I still do it in the winter. I'm still exercising six days a week (3 running, 3 cycling) but now people I used to drop on climbs are keeping up
