How to do the back stretch
Start on all fours. Alternate slowly between arching the spine upward (cat) and letting it sag while lifting the chest (cow), or rest back into child's pose with arms extended for the static hold.
How long to hold it
The most common recommendation for a static back stretch is 30 second holds, repeated 5 times with a brief pause between reps — this one is symmetric, so there's no "other side" to switch to. That is exactly how this timer is pre-configured: press start and it counts every hold, cues the short pause between reps with a distinct sound, and gives you 30 seconds of rest after the final rep. Your eyes never leave the floor.
Common mistakes
Moving fast instead of syncing with the breath, forcing end range on a cold spine, and holding tension in the shoulders.
Why it's worth doing
Gentle spinal flexion and extension is one of the safest ways to ease general stiffness after sleep or long sitting sessions.
Variations
Cat-Cow (main version): continuous alternating arch and round, good as a warm-up movement. Child's Pose: sit hips back to heels, arms reaching forward, chest sinking down — a static hold rather than movement, good for winding down. Seated spinal twist: sit tall, cross one foot over the opposite knee, rotate your torso toward the bent-knee side — adds rotation, which cat-cow doesn't cover.
Who should be careful
Move within a comfortable range — this should never be painful, especially at the extremes of the arch or round. If you have a diagnosed disc issue, ask a physical therapist which direction (flexion or extension) is safe for your specific case before doing this daily.
FAQ
How long should I hold a back stretch? This is a repeated movement rather than a single long hold: 30 seconds per rep, 5 reps, with brief 5-second pauses between.
What muscles does the back stretch target? The muscles along the spine and lower back, plus light engagement of the abs on the rounding phase.
Can I do this every morning? Yes — cat-cow is commonly used as a gentle first-thing-in-the-morning movement to counter overnight stiffness.
Related stretches
Cat-Cow Stretch Timer · Spinal Twist Stretch Timer · Hamstring Stretch Timer · Hip Flexor Stretch Timer · Quick 5-Minute Full-Body Routine
Want the anatomy and the "why"? Read the Back & Spine muscle guide.
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, not just complete one session and forget it. 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.