Open your chest and twist out a stiff upper back.
Let the rotation come from your upper back, keep those knees glued together.
The Open Book Stretch is a Stretching-first movement, with Core working as the supporting cast. Track it consistently and you'll see exactly how it feeds your stretching volume for the week.
The Open Book Stretch primarily works the Stretching with Core assisting.
Start with sets you can hold with perfect position, even if short. Add a few seconds each session; quality beats clock-watching.
Yes, it's a unilateral movement. Start with your weaker side and match the reps with your stronger side so no side gets ahead.
