Without a doubt the most common complaint I hear from athletes is that they have hip flexor mobility issues. Most of the time they've spent months stretching and foam rolling with no effect.
Hip Flexor Stretch - How to Get Rid of Tight Hips for Workouts
4 EASY Physiotherapy Exercises to Reduce Hip Pain — MOMENTUM Physical Therapy
8 Simple Exercises For Stronger Hips - BEGINNER and INTERMEDIATE
Fixing Hip Flexor Pain – Squat University
Why Your Hip Flexors Are So Tight (and What to Do About It) - Legion Athletics
9 IT Band Stretches for Relief, According to Physical Therapists
The Best Drills to Fix Your Hip Flexor Mobility! - The Barbell Physio
Hip Flexor Exercises to Strengthen and Stretch
12 Best Exercises For Hip Flexors (According To Experts) – Fitbod