Hello! The most efficient exercise to strengthen your neck depends on the age of the college student. For younger students, a simple neck stretch can be effective. To do this, stand up straight and slowly tilt your head to one side until you feel a stretch in the side of your neck. Hold for 10-15 seconds and then repeat on the other side. For older college students, more advanced exercises may be necessary. A good exercise is to sit in a chair with your back straight and chin tucked in slightly. Slowly turn your head from side to side, holding each position for 10-15 seconds before switching sides. You can also do this exercise while lying down on your back or stomach. Finally, it is important to remember that strengthening your neck muscles should be done gradually and with proper form to avoid injury. If you have any questions or concerns about these exercises, please consult with a qualified fitness professional for guidance.