Burning the midnight oil is an IDIOM that refers to working late into the night, often to the point of exhaustion. Cramming is a form of studying where one attempts to learn a large amount of information in a short period of time. Staying up late is a common way to CRAM for exams or finish projects. Uplate is a variation of the phrase 'up late' and is used to describe someone who is awake past their usual bedtime. Workinglate is another variation of the phrase 'working late' and is used to describe someone who is still working after normal business hours.