A special event is happening at Penn State Altoona Wednesday. 
 
The 23rd annual National Senior Health and Fitness Day invites senior citizens to come to the Slep Student Center to get active with walks around campus and even a Zumba class! 
 
Visitors can also receive preventive services, including a bone density screening, balance screening and blood pressure reading.
 
The event begins at 10 a.m.