THE MORE you laugh, the longer you live," 19-year-old Madison Holleran, a University of Pennsylvania freshman, wrote on her Twitter profile.
Now, Holleran's friends, family and classmates are trying to figure out when her laughter stopped and why she decided she couldn't live anymore.
Holleran, a native of Allendale, N.J., jumped from a parking-garage roof on 15th Street near Spruce in Center City about 7 p.m. Friday, according to Philadelphia police.
Her death was ruled a suicide.
Holleran was a graduate of Northern Highlands High School, where she was captain of both her track and soccer teams. She belonged to Penn's varsity track and field team and was enrolled in the College of Arts and Sciences.