Answer: No, this is simply not true. If you’ve ever looked at food labels and compared them to the calorie counters on your exercise equipment, you’ll likely come to some startling conclusions. It is much easier to decrease your calorie intake by 300 to 500 calories per day than it is to expend that many more calories each day through exercise.
Researchers have addressed this issue as well and it is generally accepted that diet is the more important variable when it comes to weight loss. Exercise is still beneficial however, and actually plays a much more prominent role in weight maintenance. Here’s the bottom line: Incorporate both healthy eating and exercise no matter where you are in the weight loss process.