Fatigue!

Shannon
Lately I have been getting so tired, especially near the end of my work shift. I am a veterinary technician working 10 hour days 4 days a week, and 6 hours on Saturdays. I've been trying to avoid strenuous activities, but I'm still having a hard time staying awake on my drive home. Do you ladies have any good tips or tricks to fight fatigue in early pregnancy?