The BAT Effect

摘要

Scientists are beginning to understand how cold affects metabolism, but they're still not sure which mechanisms really kick your calorie-burning engine into overdrive. One variable is brown adipose tissue, which converts energy from food directly into heat. After a chilly dip in a pool, two people with different levels of active BAT will both get a metabolic boost-but the person with higher levels typically burns even more calories, as shown here.