Open Book Stretch
Expert Advice
Ensure you keep your knees stacked and move only your upper body to maximize the thoracic spine mobility benefits.
How-to-do Steps
- Lie on your side with your knees bent and stacked.
- Stretch your arms out in front of you, palms together.
- Lift your top arm and open your chest as you rotate your upper body, aiming to place your top shoulder on the ground.
- Keep your eyes on your moving hand to encourage full rotation.
- Hold the stretch for a few seconds, then return to the starting position.
- Repeat for the desired number of repetitions before switching sides.
Track Open Book Stretch in FitAI
Log your sets, reps, and weights automatically. Get AI-powered progressive overload recommendations and form feedback — personalized to your training history.
Muscles Worked
Open Book Stretch primarily targets the Shoulders, Abs, Chest, with Stretching mechanics using Body Weight. Understanding muscle activation patterns helps you focus on proper engagement and maximize training effectiveness.
Primary



Shoulders33%

Abs33%

Chest34%
Equipment
Body Weight

Exercise Type
Stretching
Sets & Reps Guidance
Beginner3 x 20s
Intermediate3 x 30s
Advanced4 x 45s
Frequently Asked Questions
What muscles does Open Book Stretch work?
Open Book Stretch primarily targets the Shoulders, Abs, Chest. It is classified as a Stretching exercise performed with Body Weight.
How many sets and reps should I do for Open Book Stretch?
For beginners, start with 3 sets of 20s. Intermediate lifters can do 3 sets of 30s. Advanced athletes can push to 4 sets of 45s. Adjust based on your goals and recovery capacity.
Is Open Book Stretch suitable for beginners?
Yes, Open Book Stretch is rated as a beginner-friendly exercise, making it an excellent starting point. Focus on mastering proper form before increasing intensity or load.