Do you sit around a lot every day? Been finding your hips a little stiff? You may want to try incorporating both mobility and strengthening drills to loosen up those hips!
The hip joint is a ball and socket joint that is inherently stable. To improve flexibility, most people turn to static stretching. However, to actually improve hip flexibility, both mobility and strengthening work should be done together.
Months of intense static stretching of the hips can rarely solve the root cause of hip stiffness. My advice is to work on small stability changes at the pelvis so we learn to have better control of our core and pelvis to improve our hip mobility!