Renewed Energy

Today was Day 1 of my new workout plan. I was actually looking forward to my workout this morning!! Wow, that was refreshing. I did HIIT on the treadmill today. Here's how it went down:

2:00 Warmup
0:30 @ 8.0mph, 0:90 rest
0:30 @ 8.5mph, 0:90 rest
0:30 @ 9.0mph, 0:90 rest
0:30 @ 9.5mph, 0:90 rest
0:30 @ 10.0mph, 0:90 rest
0:30 @ 10.5mph, 0:90 rest
0:30 @ 10.5mph, 0:90 rest
0:30 @ 11.0mph, 0:90 rest
0:30 @ 11.0mph, 0:90 rest

At first, I was regretting my workout. It didn't feel intense enough, and I felt like it was becoming a waste of time. Once I hit the 4th or 5th interval, though, the regret went away. I still feel like 20 minutes of cardio isn't nearly enough, but I guess that will be true only if I'm not seeing results.