Humans have a function called an Adrenaline Rush, aka the body hitting the “oh shit” button. Sugar and caffeine trigger something similar to it, but have a mild drawback. A level 2 deathworlder that have the “oh shit” button learned the difference between the two the hard way -- Anon Guest
Adrenaline works by using all available body reserves for a desperate effort. The price is generally paid afterwards in the form of assorted injuries and the recovery from the same. That is, assuming it isn't paid in the user's demise during the desperate effort. Sugar piles on extra resources and effectively supercharges the body for a short amount of time. Caffeine, a little more complex, shuts down the 'tired' signals in mind and body whilst also accelerating the heart rate - thus fooling the body into thinking it's awake. Humans often use the combination of caffiene and sugar as a booster. They do not, as rumour suggests, boost it with Adrenaline.
Unfortunately for Tresk, they had heard the rumour and didn't bother asking any Humans about it. Not their fault, the ships' Humans were all N'Ozzies and genetically obligated to agree with and embellish any lie they heard. Other sources on the free infonets were... conflicted at best, and conflagrations at worst. Most of the conflagrations were started by, of course, N'Ozzies. Therefore, the only true way to discover fact from fiction was to try it themself.
This, of course, is not recommended for any species more delicate than a Class 2 Deathworlder. Fortunately for Tresk, they were a Class 2 Deathworlder and on the harder end of that particular classification bracket. Therefore they did what any Deathworlder would do. They live-blogged their experiences for science. Havenworlders, don't even look at trying this at home.