Stand up and move around briskly
Splash cold water on your face
Drink a glass of water
Get fresh air
Open a window or step outside
Turn on bright lights
Do a few jumping jacks or quick stretches
Chew gum or suck on mint
Wash your face and hands
Drink caffeine if appropriate
Eat a light snack with protein
Sit upright instead of lying down
Take slow, deep breaths
Change tasks or locations
Avoid heavy meals
Avoid alcohol
Get sunlight exposure
Listen to upbeat music
Reduce screen dimming and increase brightness
Take a short power nap if possible