Final answer:
Insufficient or excessive calorie intake can lead to weight loss or weight gain, respectively. Exercise helps manage weight by burning calories and increasing basal metabolic rate. Balancing calorie intake with physical activity is crucial for maintaining optimal body health.
Step-by-step explanation:
When calorie supplies are insufficient or exceed needs, there can be significant impacts on body weight and overall health. If calorie intake is too low (insufficient), the body can experience weight loss, as it starts to use fat stores for energy. This can also lead to decreased energy levels and potential nutritional deficiencies. Conversely, consuming more calories than the body needs leads to weight gain, as the excess energy is stored as fat. Over time, this can result in obesity, which carries increased risks for health conditions like type-2 diabetes and cardiovascular disease.
Physical exercise plays a crucial role in managing body weight. It not only burns calories but also increases the basal metabolic rate (BMR) by building lean tissue, which is more metabolically active than fat tissue. This means that individuals can burn more calories even when at rest, aiding in weight loss or weight maintenance.
It's essential to monitor food portions and energy expenditure to maintain a balanced intake and avoid the consequences of energy imbalances, such as obesity and the associated health risks. Maintaining a healthy balance of calorie intake and physical activity is key to supporting optimal body function and health.