Final answer:
During puberty, both boys and girls experience a rapid growth spurt in height and weight. In boys, fat accumulates twice as rapidly as in girls.
Step-by-step explanation:
The adolescent growth spurt (AGS) is a period of rapid growth in height and weight during puberty. During this time, both boys and girls experience growth in muscles, bones, and body fat, but the rate at which fat accumulates is twice as fast in boys than in girls. This is because boys tend to have a higher peak growth rate and a longer period of fast growth during puberty compared to girls.