Aerobics

My aerobic workout for today was 20 minutes on the treadmill as follows:

Minute	Speed
1-2	1.5
2-3	2.0
3-4	2.5
4-5	3.0
5-6	3.5
6-7	2.0
7-8	2.5
8-9	3.0
9-10	3.5
10-11	2.0
11-12	2.5
12-13	3.0
13-14	3.5
14-15	2.0
15-16	2.5
16-17	3.0
17-18	3.5
18-19	4.0
19-20	1.5

I also do a light 20 minute cool-down on my stationary bicycle.