wow..20 kg in 2-3 months? u better follow strictly of what other member here suggest. u need to discipline ur diet.

hit a gym. do lunges, squat, deadlift and all muscles group so that u can hit all muscles. read how many reps and set u need to do for fat losses exercises.

for eat, eat small portion meals everyday. around 6 meals in a day. so that ur body can burn more calories.

p/s correct me if i'm wrong

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Added on September 15, 2010, 8:25 am

wow..good weight reduction. but somehow i see not a very good way to do in puasa

1) u drink only during sahur - u should at least eat dates and drink so u can get enough energy. remember of what our prophet said in hadis.

2) actually i avoid do cardio before breaking fast. for your case, u not take any meal during sahur. ur body not get enough energy and might drain your muscle. try to do exercise 2 hours after u breaking fast.

cardio just burn calories during u do the exercise and a few hours after that. try do weightlift. u can burn more calories in 2 days.

3) laksa/bihun kinda similar to rice though. its better u get balance diet in ur meal. u need veggies, meat/fish/egg and fruit

this is only my opinion. remember of good and healthy diet. u dont want to starve.
gud luck.

avoid the minyak2 food.. quite logical i think
and junk food.. and sweet drinks.. just try to stick to that first..sounded easy but its pretty hard as a start

too ambitious? urm. nope. its a good motivation for u. keep it in your mind.

u can eat that oily or sweety, but in a very small portion. just to taste it. if u can avoid, then its better.

drink more water, green tea, fruit too.

eat something better for ur lunch. crackers are replace it with chicken breast or something