"Got a problem in your midsection? A solution's at hand with this customizable workout that offers strategies for toning your tummy and trimming your waistline in 10-minute increments. After determining how much time you have to exercise, you can pick and choose from five different mini-routines that are each 10 minutes long, including "Crunch-Free Abs," "Bikini Belly," "Yoga Abs," "Ab and Waist Definer" and "Sexy, Sporty Abs.""