How can I boost my energy levels?

I'm in a play this week, and since I can't take any time off work, it's going to mean a run of late nights and early mornings, and I just know I'm going to be really tired. Other than caffeine pills and energy drinks, can anyone recommend any ways of boosting my energy levels (safely and legally!) to get me through what is going to be a really manic week?
Answers:
super charged foods such as , broccoli, grapefruits, oranges,carrots, bananas, red cabbage, red onions, are known for super charging energy levels. high protein foods such as , cheese and red meats, eggs will also give your energy levels a lift.
lucazade will give you a short term fix.
vitamin c, tablets.get enough fruit and veg in you will help. 3 meals a day.
drink alot of water and fresh orange juice.
try ginseng its really good.
Well try a doctor for that
when i feel tired i always drink lucozade and it helps loads! must be all the sugar.
Klamath lake blue green algae from the health food store. Has vitamins, minerals and every thing. REALLY works for me.
Try Brands. This type of drink will perk up your attention.
Drop any other responsibilities, and put off anything you can until afterward so you can maximise your sleep. (You won't die if the floor isn't vacuumed!)
Other than that - eat lost of fruit. Bananas give a real boost.
Stop by a health food store or the health supplement department in a department store.

B complex pill and iron will increase your energy levels in a healthy way when your diet isn't as perfect as it should be. (Mine almost never is.) A good Multi-vitamin with Iron would be very helpful also.

You will notice the change rather quickly.

Good Luck.
vitimin b can help. don't stay up later than necessary that way you will get the most rest possible. i find that vitamins help along with a good diet. eat plenty of food. carbohydrates are a natural source of energy and they burn off easily. also ginseng and other natural herbs can help. aromatherapy can help some also. citrus scents can give you a quick boost. i'd stay away from caffeine because it's like using a drug. it gives you a high but when you come off of it you are dragging.
TRY BRUSHING YOUR TEETH I SAW THAT IN A MOVIE ONCE. EVERY TIME YOU WANT TO GO TO BED JUST BRUSH YOUR TEETH. CANT HURT.
drink loads ov redbull
Redbull gives you wings
Honey boosts your energy levels and your metabolism as well. It works for me. When I need energy, I put a few tablespoons of honey in my coffee and it works!
ginseng is supposed to be good also a healthy diet helps too- try power naps 40 mins is the optimum time. i would suggest cocaine but thats illegal...
Fish or cod liver tablets if ya dnt hav tym 2 eat!