Morning person

So I challenged myself to wake up 20 minutes earlier every day this week. This has predictably made me feel more tired in the evenings. By 9 p.m. I'm struggling to stay awake. On the other hand, I feel way more productive. Traffic isn't as bothersome in the mornings and I get to work earlier. I can have 20 minutes to myself in the morning where I don't feel panicked and the TV isn't blaring the headlines five minutes after I wake up. Time in the mornings is such a valuable commodity. It's like every minute between 5 and 8 a.m. is worth 5 minutes in other parts of the day. Does this mean I'm turning into a morning person?