Motivation to exercise affects behavior

For many people, the motivation to exercise fluctuates from week to week, and these fluctuations predict whether they will be physically active, according to researchers. In an effort to understand how the motivation to exercise is linked to behavior, the researchers examined college students' intentions to be physically active as well as their actual activity levels.

Source: http://www.sciencedaily.com/releases/2012/02/120213134135.htm

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