Simple (but genius!) moves to try.
16 Hip Stretches Your Body Really Needs
14 exercises for relieving hip pain and improving mobility
Four Hip Flexor Stretches to Relieve Tightness, from a PT
Hip Flexor Strengthening Exercises for STRONG Hips - Vive Health
Correcting Hip Extension Mobility - My Rehab Connection
Fitness 19: Lindenhurst
The Best and Worst Exercises for Bad Hips - SilverSneakers
The Best (and Worst) Exercises for Tight Hip Flexors - Martha Stewart
Fitness Advice & Workout Tips, Page 92
Stretch and Strengthen: Corrective Exercises for Hip Flexors
Hip flexors get weak when we sit too much – but simple stretches
12 Best Hip Exercises and Stretches
How to Test For Tight Hip Flexors With the Thomas Test