Put down the Red Bull. You don't need the chemicals to give you a jolt. It's not brain surgery that natural energy lifters work. I know you've heard these before but I am here to offer you a gentle reminder of the few I like and that work.
Slide open the window covering. A pinch of morning light activates certain cells in your eyes that send a wake-up call to your brain's internal clock. I recommend getting some sun mid day as well. Sitting beside a sunny window for 30 minutes midday makes you more wide awake.
Wet Your Whistle. Getting to the point where you're just starting to feel thirsty can double your feelings of fatigue. Fruits and veggies can help keep your energy and hydration levels up.
What you eat for lunch effects your behavior mid afternoon. Have salad and grilled chicken for lunch. Not the tuna melt, pizza, or meatloaf. Basically no high-fat foods. They are likely to make you moodier and more tired than lower-fat meals.
Learn from your cat. Take cat naps during the day. Close your office door or slip out to your car for a quick snooze. 20 min is a perfect amount of time to refresh your mind.
Splish Splash your face. If you feel groggy, stop in the restroom and splash cool water on your face. This one is great to do after a snooze. Surprisingly, having coffee just before your nap and then splashing your face afterward seems to be a dynamic duo of wake-up calls.