Try this 30-minute, 3-mile sweat

I've got to share this workout with you this morning because I just completed it, and it was great. It took only 30 minutes, it was fast-paced, and I was drenched in sweat by the end. My kind of workout -- productive yet short enough that I was off my home treadmill and refereeing little boy fights in short order.

Thanks to my sister, the source of all my challenging treadmill workouts, for passing this on, so I can pass on to you this almost three-mile journey.

• Walk 5 minutes to warm up (pick your speed -- I walked at 4.5 mph)

Complete the following series five times.

• Walk 1 minute at 4 mph
• Run 1 minute at 6 mph
• Run 1 minute at 6.5 mph
• Run 1 minute at 7 mph
• Run 1 minute at 7.5 mph
  

Try it -- I'm counting on you, Bev -- and tell us what you think.