L.
Side bends. With weights. You hold a bumbell in each hand and stand straight up with your feet together. Slowly bend at the side and lower the weight down tghe side of your leg toward you knee. Slowly come back up to a straight position. Repeat on the other side. Do 10-15 repetitions on EACH side every other day. It works your oblique muscles (on the side of your torso) and will tighten and strengthen them. You'll see you waise slimming in no time. Any weight trainging program is a great fat loss program, because as your body builds muscle, it in turn burns more fat in a resting state, by raising your metabolism, because muscle burns more fat than fat! So you don't need to trun into a body builder, but just tone and add muscle, and the muscle will work for you when you are not working out! And it requires very little time, 15-25 minutes a day. Just remember to alternate and not work the same muscles every day. They need time in between to heal.
Oh, and with weight training you won't necessarily notice a difference in what the scale says (depending on how much you want to lose) because muscle weighs more than fat, but you'll trim down and drop clothing sizes.