This article is from the running Beginners' FAQ, by Ozzie Gontang with numerous contributions by others.
Many people mix running and other sports. As long as you are taking part in
a predominately aerobic exercise (running, cycling, swimming) 3-5 times a
week you will be getting all the health benefits of running. If your other
sport is not predominately aerobic, then you should be running 3-5 times a
week to gain all the benefits.
Running should increase stamina in other sports, for example, tennis,
squash and soccer.
The best training for running is running.
 
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