Drink water
Eat a small snack with carbs and protein
Have a cup of coffee or tea
Stand up and move around
Take a short brisk walk
Get fresh air
Do deep breathing
Splash cold water on your face
Stretch your body
Expose yourself to bright light
Listen to upbeat music
Avoid heavy meals
Reduce sugar crashes
Check your posture
Rest your eyes briefly
Take a short power nap
Stay hydrated throughout the day