data SASUSER.fitness;  
   length  AGE 8  CalPerDay 8  WEIGHT 8  RUNTIME 8  RSTPULSE 8  RUNPULSE 8 
           MAXPULSE 8  OXYGEN 8  GROUP 8  ratiopulse 8  C 8  C 8;
   set SASUSER.fitness;

   C= WEIGHT * Int((10*RanUni(0)+ 10));
run;