Each time I needed to lose the baby weight, I stopped eating after 6:30 p.m. five nights a week. The other two evenings were reserved for nights out. Most of what I'd eat at night was junk food anyway, so it took only two months to get my pre-baby body back..
As a general rule, arrive at the airport no later than two hours before your domestic flight is scheduled to depart. This is somewhat later than the typical suggestion of three hours for an international flight.
If you feel you need to, please allow yourself extra time to get to the airport and to get from the entrance of the airport to your particular departure gate. United recommends that passengers arrive at the airport an hour prior to all flights within the U.S. and two hours prior to all international flights.