This workout will kick your intervals up a notch ... or five!
Click this image and print to bring with you to the gym! I did this yesterday and my legs are still shaking even at the thought of this workout!
Above are my treadmill times. If you're new to interval running try running at 8.0 for 1 minute, 7.0 for 2 minutes and 6.0 for 3 minutes. Once you get comfortable with that increase your speed by .5 mph each time and move up from there!