I feel tired

I think Spring Asthenia is kicking in, because lately I felt very tired . Like I said before, I love Spring and the season makes me smile, but I am so tired. I don't go to bed late and I wake up at a decent hour, but I feel exhausted. I was thinking I need to buy some vitamins, maybe they will help me feel more energetic. I can't wait for the weather to be warmer...