Teenage girl resting on a pillow and looking toward the window.
Puberty, Periods, and Mood: A Teen’s Guide to What’s Changing

Your body is changing, sometimes faster than you'd like and sometimes slower than your friends'.…

Woman wearing sunglasses outdoors with wind in her hair.
Adrenaline: What Happens in Your Body When You Feel a Rush

You're about to give a presentation. Or a car swerves in front of you. Or…