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
;