Form check: Are you using proper lifting technique?
You're mid-set, and something feels off. Your lower back is aching, the weight shifts to one side, or the rep just doesn't feel crisp. A 2023 study filmed 100 lifters during squats and found 71% had at least one major form fault [1]. Mirrors lie, memory fades, and a coach isn't always there. Dorsi uses your Apple Watch's motion sensors to catch those faults in real time, but knowing what to look for matters first. This guide walks through the most common form breakdowns, why they happen, and how to fix them without overthinking your next set.
Practical Playbook
What does good form actually look like for you?
Start by defining your goal. Squat? Deadlift? Each lift has a unique set of technical standards. For a squat, look for consistent depth and a neutral spine. Don't compare yourself to powerlifters on Instagram. Your anatomy changes your shape.
Record one set per session from two angles
Set your phone on a bench or use a tripod. Film from side and front. Watch the video right after the set, not later. Compare what you see to a single trusted cue. If your knees cave, narrow your stance or think knees out.
Use real-time feedback from Dorsi
Dorsi analyzes your bar path and joint angles during the lift. It buzzes your wrist when your hips shoot up or your back rounds. One alert per set is enough. Over time, you learn to self-correct without looking at a screen.
When should you deload to fix form?
When you're missing reps due to form breakdown, it's likely a technique gap. Take five to ten percent off the bar. Do perfect reps at that weight for three weeks. Then retest. Most people don't get weaker from a small deload; they get more consistent.
Common Mistakes
- Mistake
- Only filming from a single angle.
- Why
- A side view can hide bar path deviations or knee cave that a front angle would catch.
- Fix
- Film from both 90 degrees and 45 degrees front, or use a tripod and record every working set.
- Mistake
- Checking form by glancing in a mirror while lifting.
- Why
- Turning your head mid-lift shifts your spine and can throw off your mechanics. You're also not seeing the full picture.
- Fix
- Record your set and review it after. You can't self-correct in real time without compromising the lift.
- Mistake
- Only evaluating your first rep.
- Why
- Form degrades as fatigue builds. The rep that hurts you is usually rep 8 or 10, not rep 1.
- Fix
- Watch the last three reps of your hardest set. That's where the breakdown happens and where you need to adjust.
- Mistake
- Comparing your squat depth to a powerlifter you saw on Instagram.
- Why
- Hip anatomy (femur length, socket depth) determines what 'parallel' looks like for you. Chasing someone else's depth can force bad lumbar flexion.
- Fix
- Find your own bottom position by going as low as you can without losing neutral spine, then film it. That's your depth.
Frequently asked questions
Just show up. Dorsi handles the rest.
- HRV-driven readiness — today's plan adapts to how recovered you actually are.
- Adapts every session — no decision fatigue, no second-guessing your numbers.
- Apple Watch native — log a set with your wrist, not your phone.