Ninety minutes of mostly running, on one of the largest playing surfaces in team sport.
A soccer pitch is enormous compared to most team sports, and outfield players cover several kilometers of running over a full match — a mix of jogging, sprinting, and walking that rarely lets the heart rate fully settle. That sustained, large-scale aerobic demand is why soccer's MET value sits above basketball.
At 7.0 MET, a 70kg intermediate player burns roughly 770 calories over a full 90-minute match.