I exercise regularly, and so I can eat what I like.
Exercise goes hand in hand with diet and lifestyle. It can burn energy which would normally be stored as fat, help tone the muscles and it is good for the heart.
It is important to work to the required exercise intensity for a certain amount of time to burn the required calories. The lesson is as simple as: burn more than you consume and you will lose weight, consume more than you burn and you will gain weight.
Therefore, if you are exercising a lot but eating and drinking more energy than you have burnt, you will gain weight.
It is important to vary your routine, keep your body guessing and factor in rest and recovery to continue to see results.