Sit tall with your back straight, shoulders down, abs engaged, and legs extended like a "V" in front of you. Bend your left knee, placing the sole of your foot next to your inner right thigh. Rotate your torso to face your right leg.
Bend forward from the waist, reaching your hands towards your toes. Allow your torso to collapse over your leg.
Breathe deeply and hold for 10-30 seconds. Repeat on opposite side.
Make sure you master the "Seated Modified Hurdler Stretch" before trying this deeper stretch. Stretch to the point of "mild discomfort," not to the point of pain. Never bounce. Keep shoulders relaxed.
Muscles Stretched: Hamstrings, hips, inner thighs, back