Your hip is a deep ball-and-socket joint where your thigh bone fits securely into your pelvis. When you have hip instability, your thigh bone may feel like it doesn’t fit into the hip socket securely.

Hands up if you struggle with tight and achy hips? If your hand shot straight up, then, firstly, welcome to the (seemingly packed) club — and secondly, allow us to introduce you to the best hip flexor ...