Melt Into These 16 Flexibility-Boosting Yoga Poses and Unknot Muscles You Forgot You Had

Gwen recommended a modified Fish Pose for beginners looking to increase flexibility and extension through the spine. "This pose not only opens the back in two directions," she said. "It also reverses poor posture habits and undoes tech neck issues!"

• Lie on your mat with your back flat on the floor. Place a block beneath your midback and another beneath your head.
• Bring your arms close to your sides, palms facing down. Keeping your butt on the floor, inhale as you arch your back, pressing your hands and forearms into the ground.
• Keeping your legs strong, hold for five breaths, then relax your back.