I am getting ready to return to work, what can I use as a caffeine substitute to help get me through the day.

Try decaf tea. If you add a little fat free milk to it it looks like coffee so you at least get an illusion that you have coffee in your cup. Plus it tastes really good!

I have decaf coffee. I use my protein drink instead of creamer. It's actually very good.

My Dr. doesn't allow coffee in any form. Hence, the decaf tea.

I just put instant decaf coffee crystals in my protein drink and drink it like iced coffee. I also drink decaffeinated herbal tea during the day too since I get cold all the time it helps warm me up.