This stretch is extremely challenging and highly effective for tight hips.
To do the Frog Stretch, kneel on the ground and spread your knees as wide as possible while also supporting yourself on your palms. Turn your toes out as you open your knees as wide as possible.
Then sit your butt back toward your heels as much as possible while keeping your knees wide. You may not be able to sit back much, but just push back as far as you can. Keep the inside of your shoes facing the ground.