The .fit file extension is used for a proprietary data file format that was developed by Garmin Ltd. These .fit files are generated as activity files by the Garmin Training Center software.This program is designed for Windows PCs and Mac OS X computers. The Garmin Training Center allows users to monitor their physical activities and exercises like cycling, swimming and other workout sessions. These .fit files contain logged data like date and time stamps, activity details and other pieces of information related to the physical exercises of the user.These .fit files can be created and edited by using the Garmin Training Center software for Windows PCs or Mac OS X computers. The data stored in these FIT files can also be viewed through the user interface of this software.
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