If your New Year’s resolution was to take the weight off, the Homewood-Flossmoor Park District has a special program to help get you started and keep you motivated. “Jump Start Challenge” meets from 7:30 to 8:30 p.m. Thursdays, Jan. 11 through March 29, at the H-F Racquet & Fitness Club, 2920 W. 188rd St. in Homewood. The program will focus on weekly workouts and weigh-ins, plus sessions with a nutritionist. “At the H-F Racquet Club, we realize you can’t exercise your way out of a bad diet. So . . .