Short uphill sprints train power and acceleration. The hill slows you down just enough to make sloppy form obvious. Rest is part of the workout.

Diagrams show the shape of the movement. Follow the written steps before you add load.
Equipment. Hill or stairs
Muscles. gluteus maximus, quadriceps. Also hamstrings, calves, core
All Cheeked Up publishes general fitness education. It is not medical advice, physical therapy, or a promise that your body will change. Stop any exercise that causes pain and talk with a qualified professional about injuries, pregnancy, or health conditions before you train.