Final answer:
A sedentary individual typically requires up to 2400 calories per day, though the precise amount varies based on specific factors like body mass and metabolism. An average person generally needs between 1500 to 2000 calories per day, and consuming more than the required calories can lead to weight gain.
Step-by-step explanation:
When an individual has a sedentary lifestyle with no physical activity (PA), the calorie needs are typically lower compared to an active person. Sedentary adults require up to 2400 kcal/day to maintain their body functions and carry out their daily activities without additional exercise. However, the actual number of calories varies depending on several factors including body mass, age, height, gender, and metabolism.
On average, people generally need between 1500 and 2000 calories per day. It is essential to understand that these values are approximate and can vary widely between individuals. Consuming excess calories beyond one's daily needs can lead to weight gain, as an additional 3500 calories consumed results in one pound of added body weight.