Nobody likes to carry a "spare tyre" with them every where that they go. It is ok to carry a spare tyre in your car but not on your body. hehehe. Most men start to have belly fat after they got married. I wonder why. Too much sex? Too much food? As for the ladies, we can have belly fat as early as in our 20s if we don't exercise. Then the search on how to lose belly fat fast begins. There are many ways to lose the belly fat. As for me, sit ups works the best for my belly. How about you?