The average amount of calories spent is around 2000 calories/ day. The more precise number could be easily calculated via google and/or using the various activity monitors or apps. Deficit of 500/calories/day usually would result in 1 pound/week weight loss. It’s commonly recommended to target 500-1000 calories/day deficit with expected 1-2 pounds/ week weight loss. It is common is to target 1000-1200 calories a day for people interested in a weight loss. Going below 800 calories/day for an average size adult is considered by many as a threshold for starvation and might need a physician supervision, has a high risk of triggering a “starvation mode”, less is not always better…