With the soles of the feet together and the knees open, the frog pump puts the glutes in a shortened position. It is a high-rep finisher, not a max-strength lift.

Diagrams show the shape of the movement. Follow the written steps before you add load.
Equipment. Bodyweight, Mat
Muscles. gluteus maximus. Also gluteus medius
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.