“The Saying Use It Or Lose It”

This is true if you don’t use it you will lose it.  It does depend on what fitness level your where right before you stopped.  People who are at the a very high level of fitness will see a very big decline in the first 3 weeks of not exercising.  After that it will slow down greatly.  People who are at a moderate to low fitness level will see very little decline in the first 3 weeks and a much bigger decline after that.  Some people will tell you that you will lose it twice as fast as it took you to get it.  Thats not always true, but none the less you will lose it.