How to do the chest stretch
Stand in a doorway and place one forearm flat against the frame, elbow bent to about 90 degrees. Step through the doorway slowly until you feel a stretch across the chest and the front of the shoulder. Keep your torso upright rather than twisting toward the wall.
How long to hold it
The most common recommendation for a static chest stretch is 30 seconds per side, repeated 2 times, with a short break to switch sides. That is exactly how this timer is pre-configured: press start and it counts every hold, tells you when to switch sides with a distinct sound, and gives you 20 seconds of rest after the final rep. Your eyes never leave the floor.
Common mistakes
Stepping through too fast instead of easing in, letting the shoulder hike up toward the ear, and rotating the torso instead of keeping it square to the doorway.
Why it's worth doing
Hours of typing, driving or looking at a phone pull the shoulders forward and shorten the chest muscles, which reinforces a rounded posture. A regular chest stretch counters that pull directly and is one of the more noticeable posture-related stretches — most people feel taller within a few sessions.
Variations
Doorway stretch (shown above): the most accessible version, needs only a doorframe. Elbows-back opener: stand tall, place both hands on your lower back with fingers pointing down, and gently draw your elbows back toward each other — no equipment needed at all. Pole or bar stretch: hold a broomstick with a wide overhand grip in front of your thighs, and slowly raise it overhead and toward your back as far as comfortable — reaches the shoulders more directly.
Who should be careful
If you have a shoulder injury or recent surgery, keep this shallow and avoid the pole/bar variation, which asks for the most shoulder range of the three. A normal chest stretch feels like a broad pull across the chest, not a pinch in the front of the shoulder joint.
FAQ
How long should I hold a chest stretch? 30 seconds per side, 2 reps is the standard recommendation, and it's exactly how this timer is pre-configured.
What muscles does it target? Primarily the chest (pectoral) muscles, with the front of the shoulder assisting.
Does chest stretching help with rounded shoulders? A tight chest is one contributor to a rounded-forward shoulder posture, so regular stretching can help — though it works best paired with strengthening the muscles between the shoulder blades, not stretching alone.
Related stretches
Shoulder Stretch Timer · Neck Stretch Timer · Back Stretch Timer
About this timer
ExtendTimer is a free stretching timer with sound cues for every phase: a steady tick while you hold, a count-in when you switch sides, and an alert on your final rep. It works offline, installs to your home screen like an app, and needs no account. Create a free account and it also tracks every session — total minutes stretched, your most-worked muscles on a visual front/back body map, and saved routines — so you can see your consistency build up over time. Routines of up to two stretches are free forever; Pro ($4.99/month or $29.99/year) unlocks unlimited routines, custom recorded sounds for any phase, and curated multi-stretch routine presets.