Let's go natural and have green tea with honey
Also you can heat up some chicken broth with ginger in it, will give you a good boost
Try NOS. It doesn't taste like cough medicine as most of them do, it has a nice peachy flavor. Almost instant energy kick and no crash!
Half a cup of battery acid and plugging my arse into a light socket works wonders!!
No ...seriously
I have found that a good workout in the morning, followed by several light meals during the day works for me - and plenty of water!!
Not into the soluble "energy" thing myself (unless it comes in a bottle with a cork) ...good nutrition and plenty of rest.
5 Hour Energy...gets this superboy going.