Your Total Daily Calorie Target is calculated using your Total Daily Energy Expenditure (TDEE), plus/minus your caloric surplus/deficit. TDEE utilizes estimated activity or activity received from your wearable device. The Total Daily Calorie Target utilizes your target weight change to establish a caloric surplus or deficit. Note that the surplus/deficit is only used in cases where your target weight is greater/less than your current weight. Always consult with your doctor or nutritionist before engaging in a calorie-enhanced or restricted diet to ensure that you do what is best for your health.
Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1091498/
