The US government Centers For Disease Control says:
“To maintain your weight: Work your way up to 150 minutes of moderate‐intensity aerobic activity, 75 minutes of vigorous‐intensity aerobic activity, or an equivalent mix of the two each week. Strong scientific evidence shows that physical activity can help you maintain your weight over time. However, the exact amount of physical activity needed to do this is not clear since it varies greatly from person to person. It's possible that you may need to do more than the equivalent of 150 minutes of moderate‐intensity activity a week to maintain your weight.”
