IS THE DAX GETTING TIRED?

I think it is, at least for now. See the 120 minutes chart (courtesy of http://www.futuresource.com/) and take your own conclusions:

The MACD (Moving Average Convergence Divergence) is starting to signal a correction in the 120 minutes time frame and the momentum is also looking toppy.

Conclusion: we may be headed for a close of the gap between 7588 and 7628 in the next few days. Stay tuned!