What do you look for in a workout video?

Something that is realisitc, yet will leave me feeling soar the next day.  I want to get something that will raise my heartrate and target areas to gain muscle and burn fat.  Something realistic and manageable.

Explanation:

Hope this helps:)

honestly it depends on what your trying to work on and if it will help you. like if your in football you would look for strength and endurance. just an example.