The sit ups punishment is a form of punishment given in schools of Indian subcontinent, specially in India, Bangladesh, Sri Lanka and Pakistan. In this punishment, one has to sit down and stand up continuously and count the number of sit ups. It is a common punishment in schools. Generally students are asked to perform this with holding their ears with hands. For humiliation, it is done in front of other students.
References
Sit ups punishment Wikipedia(Text) CC BY-SA