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You can't nail the perfect squat with just an iPhone app
The Squat. Capital 's'. With or without weight, it's widely regarded as the best exercise you can do. But one that's easy to get a little bit wrong and ruin all those benefits. So here's Kaia Health's Perfect Squat Challenge app, developed with input from both physiotherapists and sport scientists to help you nail the form. Notably, there's no wearable, no special hardware. It's just your iPhone camera and roughly seven feet of space.