If students at Northeastern University seemed a bit crabby over the weekend, it wasn’t because they were exhausted by their classwork.

Students from the school set a Guinness World Record for most people “crab walking” at the same time. The 376 students each had to do the walk for two consecutive minutes. If anyone stopped moving, or touched the ground, that individual would have be disqualified from the record total.

Executing a “crab walk” requires placing your hands on the ground, behind your back, and then using all four limbs to scuttle sideways like a crustacean.