As a college student, if you want to exercise at home during the winter vacation, you can do it in the following ways:

First, buy some fitness equipment, treadmills, etc. And exercise at home under the guidance of parents.

Secondly, if there is a school near your home, the school stadium allows people to go in for exercise, and you can take time to play basketball, run and exercise.

Third, you can exercise in the sports areas of your community (such as tennis courts, basketball courts and badminton courts).

These are my suggestions for reference only.