your penis gets bigger
1. Muscular stress 2. More energy is consumed 3. Oxygen is depleted by an increase in aerobic metabolism
it changes
life changes some
The pressure in the pulmonary artery increases during exercise if the cardiac output increases.
they get emotional. and moood swings.
you wouldn't be losing any fat.
You have to be confident about your self. You have to remember that these changes are for the good and keep a positive attitude.
Yes
it starts to get hot and people go outside
Behavioral changes that may happen to boys and girls during puberty, is that they may have bigger attitudes. They may struggle with self esteem, and may become rebellious.
There is no answer it is an opinion, your opinion; Depending on what you think.
The most important change is the reproductive system becoming fertile. Also there are many emotional changes .