Bench Press Form: Bar Path, Arch, and the Mistakes That Stall You
2 min read
A strong bench is built on a stable base. Most plateaus come from a loose setup or a bar path that fights your shoulders. Here's how to fix both.
Build a stable base
- Plant your feet flat and drive them into the floor.
- Pull your shoulder blades together and down, and set a modest arch in your upper back.
- Keep your glutes on the bench and your whole body tight — the bench press is a full-body lift, not just arms.
Find your bar path
Lower the bar to your lower chest, around the sternum — not toward your neck. From there it travels on a slight diagonal back toward your shoulders at lockout. That gentle J-curve keeps the bar stacked over your elbows.
Mind your elbows
Don't let your elbows flare straight out to 90°. Tucking them to roughly 45–70° from your torso keeps the bar over your elbows and tends to sit better with your shoulders. Think “bend the bar” to switch on your lats and keep the elbows in — and don't overdo the tuck. More in elbow flare on the bench press.
Common mistakes
- Bouncing the bar off your chest instead of touching and pressing.
- Hips lifting off the bench as you drive.
- An uneven lockout, one arm ahead of the other — often a strength or stability difference between sides that's worth training directly.
Check it on video
Film from the foot of the bench, looking up it, so both arms stay in frame — the angle FormLens asks for (how to film your lifts). FormLens measures your elbow depth on every filmed rep (under 95° at the bottom counts as full range), the difference between your left and right elbows (15° or more flags a rep) and elbow flare — the angle between your upper arms and your torso at the bottom, with a “High Elbow Flare Detected” note on any rep over 75° (how to read it).
It doesn't measure bar path. That's easiest to judge by eye from the side, so if the J-curve is what you're working on, film one extra set side-on. Depth, balance and consistency feed your form score.
How FormLens measures this
Bench press · Filmed from the foot of the bench
- Depth
- Your elbow angle at the bottom of each rep. Under 95° counts as full range.
- Left/right balance
- The difference between your left and right elbow angles. 15° or more flags a rep.
- Elbow flare
- The angle between your upper arm and your torso at the bottom of each rep, from the wider arm. The gauge is green under 60°; a rep over 75° brings up a “High Elbow Flare Detected” note, and the analysis flags reps at 80° or more.
- Consistency and tempo
- How closely your reps match each other, and how steady your rhythm is, on multi-rep sets.
Not measured: bar path, arch and leg drive — judge those by eye from the side. Every measurement is an estimate from a single camera, so setup matters — see the camera setup.
Educational only — not medical advice. FormLens is a training aid, not a medical device; measurements are estimates from a single camera. If something hurts, see a physio or doctor. Terms of Use
First published · Last updated · By FormLens