The "hidden survival muscle" is most likely referring to the psoas major. It's deep in your belly, connecting your spine and leg. This deep muscle helps you bend at the hip, run, and keep your posture upright. It's called a survival muscle because it contracts when you're scared, ready to bolt. Sitting a lot can tighten it, leading to back pain. Stretching your hips regularly can help keep this key muscle loose and strong!

Ever feel stiff or sore? Tight hips might be the culprit! They help us move our legs, but if they're inflexible, it can affect our posture, balance, and even cause back pain. Sitting for long periods is a common cause. The good news? Regular stretches and exercises can loosen your hips, making you more flexible and improving your overall movement. So loosen up and get ready to move with ease! 

There's a strong contender for "most powerful muscle" you might not even know about: the psoas (pronounced so-az). This deep core muscle runs from your spine to your leg and helps you walk, run, and stand tall. It's even linked to posture and breathing. Nicknamed the "fight-or-flight muscle," it tenses when you're scared or stressed. Tightness here can lead to back pain. Stretching and exercises can keep this powerhouse muscle loose and working its best! 

Holding stretches (static stretching) might feel good, but for peak performance, it's not enough. Static stretching can actually decrease your power right before a workout. A well-rounded routine should include dynamic stretches that mimic your activity and prepare your muscles for movement. Think of it like warming up your car before hitting the gas!