This is a great workout that will touch upon all major muscle groups and burn off a decent amount of calories in just over 8 minutes. The video gives you a visual of how to do the workout, as well as some verbal cues that will help you keep your form clean so that you get the most benefit possible out of this short workout.
When it comes to physical activity, something is always better than nothing, and that definitely rings true of this well-rounded workout.
When you are limited for time and looking to get the most out of your efforts, compound movements (exercises that use multiple muscle groups instead of isolating a muscle) are your best bet.
This workout makes for an awesome metabolism boost.