The body you receive near the end weeks of a school term due to assignment/exam stress, caffeine and lack of sleep. A feel of heaviness or laziness may be caused, as well as an increase of mass in the stomach, thighs, arms and so on. This body tends to wear off post exam weeks due to a better wellbeing and more chance of sleep rather than study.
"Bruh you up for some booging? (bodyboarding)"
"Nah, I'm rocking the exam bod"