What can I do to keep awake at work ? besides coffee?

Go for tea. Tea is actually more effective to keep you awake. Even though, you won't get a direct energy boost as with coffee, the absorption of caffeine in tea is more gradual and thus better at work. If you do like to go for that boost then Red Bull and other energy drink work better. At last, chocolate milk also contains a small amount of caffeine, though even less than tea.

Several things. Regular exercise, especially first thing in the morning; eat better, particularly increasing intake of fresh vegetables and cutting back on processed food and sugar; and getting more sleep. If you have, like most people, the tendency to get groggy after lunch I've found taking a short walk during my lunch hour helps. When I would work 10-12 hour days, even a 10 minute brisk walk made a big difference.

Have a drink of water. Dehydration can leave you feeling drained and fatigued. You don't necessarily have to follow the "eight glasses a day" rule, but you do want to drink enough water to keep your body well hydrated. Try to get to the fridge or water cooler for a refill every few hours.

Eat a light dinner. "When you eat too much, your body expends most of its energy on digestion so it has less to put towards concentration," says Rachel Begun, M.S., R.D., a spokesperson for the Academy of Nutrition and Dietetics. Skip—or limit—the carbs: they increase your body’s production of the sleep-promoting neurotransmitter serotonin, making you groggy. Instead, opt for a protein-packed meal, like grilled tuna over a bed of spinach.

Munch on walnuts or dried tart cherries. Both are natural sources of melatonin, a hormone that regulates your body clock.

Eat your breakfast. People who eat breakfast every morning report less fatigue and stress than people who skip it. High-fiber foods, like hot oatmeal, stick with you longer than a sweet roll or pastry. As the day wears on, they'll prevent you from getting hungry (hunger can lead to low energy).

Some studies have found that yoga, which uses various postures and deep breathing for exercise and meditation, can be an excellent fatigue fighter.

Grab a cinnamon stick. Research finds that just a whiff of this scented spice can reduce fatigue and make you feel more alert. No cinnamon handy? Grab a mint from your bag. Peppermint's sweet aroma is another fatigue fighter.

Let the sunshine in. Research confirms that just a few minutes of walking outside on a warm, clear day enhances mood, memory, and the ability to absorb new information. Going outside can even improve your self-esteem. If you absolutely can't get out, at least open the shades.

It’s true! You may be lacking in energy because you’re not sleeping enough. Although there is no magic number, most adults need around seven to nine hours of sleep per night and they’re not getting it. Okay, I admit: I don’t remember the last time I got nine hours of sleep during the week, but I try to shoot for 7 myself. The National Sleep Foundation reports about 63 percent of adults don’t get enough sleep, and the average adult gets less than seven hours of sleep per night.

Hope it helps! Also, humming can help you too, but I don't think you wanna do that in work :P

Exercise

Exercise

Work?

Dark chocolate

Apples! One apple has the same kind of effect as half a cup of coffee and much better for you.

Moving around.

Tea