Final answer:
To lose or gain 1 to 2 pounds a week, you need to create a calorie deficit or surplus. It is generally recommended to aim for a deficit or surplus of 500-1000 calories per day. Individual factors such as metabolism, activity level, and body composition may affect these numbers.
Step-by-step explanation:
In order to lose or gain 1 to 2 pounds a week, you need to create a calorie deficit or surplus. To lose weight, you need to consume fewer calories than you burn. To gain weight, you need to consume more calories than you burn.
It's generally recommended to aim for a deficit or surplus of 500-1000 calories per day. This means that to lose 1-2 pounds a week, you would need to consume 500-1000 calories less than your daily calorie needs. To gain 1-2 pounds a week, you would need to consume 500-1000 calories more than your daily calorie needs. It's important to note that these numbers may vary depending on individual factors such as metabolism, activity level, and body composition.