20 minutes treadmill workout

Need a quick incline treadmill workout? 
Here is what I did today. I do the intervals every 1/4 of a mile, and ran a total of 2 miles in 
20-22 minutes. 

0-0.1 miles: warm up, put the incline on 3 and the speed on 3.5-4
0.1-0.25 ; speed on 5.5, incline on 3
0.25-0.75; speed on 5.7, incline on 4
0.75-1.0; speed on 5.7, incline on 3
1.0-1.25; speed on 5.7, incline on 4
1.25-1.5; speed on 5.7, incline on 3
1.5-1.75; speed on 5.8/6.0, incline on 4
1.75-2.00 speed on 5.8/6.0, incline on 5

This is a great workout if you don't have much time or want to keep energy to do strength training.