Eat, Sleep, Run

Since all this training has hit full swing and I'm finding that I'm hungry nearly all the time, (this is a new thing for me) and in need of a nap nearly every day, (also a new thing for me) will it get better? All I do is EAT, SLEEP, RUN. I hope that my body gets over the shock and starts behaving properly. I can't live like this. My hubby is going to kill me if I don't start finding some energy to clean the house.