Hip Flexor Focused Warm Up — Dani Winks Flexibility
Tight hips? My favorite warm-up exercises - RockTape
The Inability to Lift Your Knee When Running
10 Best Hip Flexor Exercises - Outside Online
How to Deal with Hip Flexor Pain
Is Running in Place Effective?, jogging
1st Fitness - Jogging in place is an effective warm up exercise that warms the entire body however could make your legs, especially the quadriceps/hip flexors, very sore if performed for extended
Therapy Exercises for the Hip - Physiopedia
Exercises to Correct Quadricep/Hamstring Imbalances
Free Your Hip Flexors and Activate Your Glutes and Core
Dynamic Warm-Up Exercises to Help Prevent Injury - Elite