Some gifted students often get overly involved in activities in school and outside of school. They then might feel like they don't have time to fit everything in their day, leading to more stress. They may not have time to relax, be creative, hang out with others, or reflect.
Stress and feeling overscheduled from a middle school student
For parents but some good points
How overscheduling affects students
How many activities should a student have
Many for parents but helpful information to look at
Why Gifted Students are Overscheduled