Does swimming tone your stomach?

In two weeks I have to go swimming with guys from our school. How can I tone up my stomach and my thighs?

• We were given the option to go swimming once every 2 weeks for two hours. If we didn't, we had to stay at school and do cross country running. I chose swimming because it's only recreational swimming. I didn't realise there'd be guys there!!! Atm I am a UK size 12 and happy with it (EU 40 and US size 8 I think...) All I want to do is tone up. I know how to lose weight and that's absolutely not fussing me but is there anyway i can begin to tone up my stomach and thighs? Thanks mucho :)

• Answer:

  Start doing aerobics everyday for 30 to 45 minutes. Leg workouts for women Do this exercise with ankle weights on while watching TV http://www.bodybuilding.com/fun/2002/legcurl2.jpg This exercise without weights for about 15minutes http://www.bodybuilding.com/fun/exerpop.php?Name=Barbell+Squat Do this exercise while sitting in a chair with ankle weights http://www.bodybuilding.com/fun/exerpop.php?Name=Leg+Extensions This works your calf muscle http://www.bodybuilding.com/fun/exerpop.php?Name=Standing+Dumbbell+Calf+Raise Link to ab exercises: http://answers.yahoo.com/question/index;_ylt=ApZGRQ1pucclbGRZLLVqHfzty6IX;_ylv=3?qid=20071231021105AAfwURV&show=7#profile-info-zUpu44ZJaa