Should the students has many assignment ?

According to me, assignment was important in the learning, because teh assignment can to practice the ability that needed to more understan about a problem. The more practice can make me to be a smart person until increase the comprehension abiut that.
When i routine to make the assignments. I can to Settle the study time and finally i can be a discipline person. But if the assignment was many, the assignment make my body to be stress, health problem, also my life can so unbalanced, because i often forget to eating and lack of sleep.
Some people thinking the assignment was load, becausethe assignment from my teacher to develop the ability is so difficult more than the lesson that teach from my teacher. Therefore, the assignment is important but the assignment also not overdo it.