Photo: Rance Costa/Flickr

Chances are, you have a trouble body spot or two, which means you probably need some specific exercises to target those areas that drive you nutty. Lucky for you, Fitness magazine has a cool tool perfect for building your own personalized workout and uploading it to video. It takes just 30 seconds, and in addition to arming you with a super effective workout, your video will show you how to use the equipment you already have at home. And if you don't want to use any equipment, that's fine too.

To get started, all you need to do is enter a few pieces of personal information and pick the body parts that need some work. Then you'll select the equipment you have available (a rolled towel and chair count!), and you even get to pick the duration of your dream workout, which might be as short as 15 minutes or as long as one hour. Then, click "make my workout" button, and presto, your very own video pops up. Don't love it? No problem, because you can tweak it all you want.

If you prefer not to craft your own video, the folks at Fitness offer several that are pre-made and ready to view right now -- here they are.