Our picks for HIIT, spinning, treadmill, strength and CrossFit training

Fitness trackers and smartwatches have been notoriously underwhelming for gym-goers, but there’s a new breed of wearables designed for strength, Crossfit, HIIT and gym-based workouts.

The latest gym-focused wearables can guide you on your form, exertion and reps to help you get the best results faster – and focus on the recovery you need to hit your goals.
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