gym management system

class Student:
    def __init__(self, name, age):
        self.name = name
        self.age = age
        self.weight = 100

    def work_out(self):
        self.weight -= 1

    def eat(self):
        self.weight += 1

    def __str__(self):
        return f"{self.name} is {self.age} years old and weights {self.weight} kilos"

student1 = Student("Rado", 20)
student2 = Student("Ivo", 21)
student3 = Student("Ivan", 20)

print(student1)
print(student2)
print(student3)

student1.eat()
student2.work_out()
print(student1)
print(student2)