Create the data set FITNESS. The BORDER option draws a black border around the graph.
data fitness; input age sex $ heart exer aero; datalines; 28 M 86 2 36.6 41 M 76 3 26.7 30 M 78 2 33.8 29 M 54 3 44.8 48 F 66 2 28.9 36 F 66 2 33.2 ;