A good balanced diet with limited calories is the best way to start to lose weight. You can exercise all you want but if you are not eating good then it will not let you lose weight.
I'm female 21,5'6, 218 and no and yes I used to play sports before I had my son now I'm trying to get rid of all this baby weight. But belly fat is the toughest!
Are you male/female age, height, and weight? Any health problems and do you want to lift weights or just run?