Spending the calories off through exercises nourishes the body with all it needs while keeping itself at a caloric deficit. Starving oneself to attain a caloric deficit is a way of changing one’s body though; exercising works internally, so managing one’s weight does not feel like exercising.
Up-regulating Resting Metabolism

Furthermore, while fat tissues are metabolically much less ”active” than muscle tissues, slightest activity of the body tends to expend more energy when muscle forms with exercises. In simplistic terms, more improved muscle mass makes the body much more efficient.
Buffering Calories

Being active burns energy, giving one a good buffer to really enjoy one’s food in moderation and actually feel satisfied with it. More digestible calories were given up more easily due to exercising, allowing for a little extra leeway of what you can eat without the stress of counting every calorie and missing out on social dinners.
Better Insulin Sensitivity

The muscle helps in absorbing sugar from your blood far better when one is exercising. With insulin sensitivity, your body would not generally store what you eat as fat. Rather, it utilizes this fuel to perform work, repairing its own tissues and organs.
Regulator of Hormones for Hunger

Ironically, mostly restricting one’s diet to lose weight increases hunger hormones and contributes to making you feel hungry. Exercise should be used to rebalance those hormones to ward off hunger, as well as to be aware of bulk perceptions from the size of normal portions.
Fat Burning While Muscle Sparing

One of the major downsides of diet-only weight loss is that people tend to lose fat and muscle. Working out while burning off fat gives the body a slender look, maintains muscles for metabolism, thus keeping weight in check.
Reducing Food Cravings from Stress

Stress creates cortisol, the primary hormone that causes the accumulation of fat around the waist and the appetite to consume whatever junk food. The positive side is that exercising helps to do away with stress. Less stress means lesser chances of feeling the emotional urge of eating calorically rich ”comfort foods”.
Afterburning Effect

Different intervals of training like HIIT or heavy lifting initiate ”afterburning” for a couple of hours post-workout, and during this time, calorie burning happens at an escalated rate. Such ”bonus” burning would directly translate to weight loss without reducing calorie intake.
Better Sleep, Less Fat

Exercise lessens the time taken in falling asleep and deepens sleep cycles. Disruption of the appetite-controlling hormones results in weight gain from poor sleeping disorders. Consequently, you would be able to sleep well when exercising more, hence regulating weight as well.
Adding to Non-Exercise Activity

By and large, when you start exercising regularly, a lot of energy is incited within you throughout the day; hence, what happens is more incidental activities, like walking the dog, taking the stairs to your office, etc., where more calories burned came unbidden.
Improving the Relationship with Food

Through working out, food starts to be seen more as an ”energy source” for one’s performance-not as an enemy. With such an attitude, food choices become easier concerning healthy whole foods because the goal is now feeling good while working out instead of dieting.
Long-term Sustainability

Most extreme diets are not easy to keep up with and mostly cause ”yo-yo” weight gain. Exercise is a lifestyle pattern that can be kept for a lifetime. It is more about what the body does rather than what someone will restrict from eating, hence very healthy and positive toward sustaining overall lifetime well-being.