Your phone buzzes with an after-hours email. Your to-do list is already a mile long. Your heart races just a little. That tightness in your chest? That’s stress saying hello. But stress isn’t always the enemy. In this chapter, we’ll explore what stress really is, why a little pressure can sometimes help, and how too much of the wrong kind can slowly wear you down. Most importantly, we’ll look at practical, research-backed ways to keep stress in the healthy zone — both for yourself and for the places you’ll one day work.