Work/Gym/Baby?

I started my job today.  I can hardly call it that though really since I only went to a professional development training in math from 8am-noon.  Afterwards I went down to human resources to fill out my new hire paperwork and sign my contract.  So my workday started at 5:30am and I was home by about 2pm.  I was still pretty exhausted.  I hope it's only because I'm used to having an afternoon nap and that was taken away.  Please let my body adjust so that I can still function and get all of my activities in.

How do you work all day, have time to work out, spend time with your baby, and not die of exhaustion?

Hmmm...