The YMCA of Greater Cleveland is once again challenging the people of Cleveland to have a healthier new year.  All Cleveland area residents are invited to participate in the fourth annual Get Fit Cleveland Challenge, which kicks off at Tower City Center on Friday Dec. 30.  The Get Fit Cleveland Challenge is the YMCA’s initiative to motivate families and individuals to start and continue a fitness program to improve health and wellness. At the core of the Get Fit Cleveland Challenge is the Y Personal Fitness Program, a 12-week exercise plan designed to help participants develop a regular exercise routine.