academic
balls
book
books
class
classroom
college
education
evening
exam
exhausted
experiment
experimenting
fatigue
frustrated
graduate
hours
late
learning
lesson
long
man
meditating
meditation
night
physicist
physics
preparation
preparing
reading
research
revising
sad
school
science
stressed
student
study
studying
teacher
test
testing
textbook
textbooks
tired
trainee
training
unhappy
university
upset