I need an easy way to reduce my waist and tummy..?!

I need an easy way to reduce my waist and tummy..?

I'm a middle-aged woman. I'm not overweight. I normally don't eat fattening food, I don't eat sweets and try to eat vegetables and salad as much as I can. But, sometimes, when I eat more than I should and I gain a few pounds, apparently they all go to my waist and tummy.

It's very difficult for me to lose them because I don't have much time to exercise, not to mention the fact that I have a little problem with my spine so I have to be careful.

Does anybody know about a fast and easy exercise that can help me reduce my waist and stomach?

Something I could do, let's say, in the mornings or in the evenings?

Please, I need serious and accurate answers. If you plan to make a joke, abstain from replying.

Thanks a lot!!
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Eat only when hungry and not more than thrice a day. Nothing other than water in between. Include plenty of uncooked vegetables and fruits in each meal, preferably 50%. Chew each morsel at least 32 times to activate ur body to generate signals of hunger/fullness. Obey these signals.

Take light exercises and brisk walks regularly preferably twice a day.

U will achieve what u have not even dreamt and that too in a reasonable time. Do not be in a hurry.