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Strength training has exploded in popularity over the past decade, especially recently. Whoop’s own data shows that strength workouts on their platform increased 122% YoY between 2024 and 2025. For female Oura members, strength training was the third most popular activity, behind “walking” and “housework.” People now see strength training as a critical part of their wellness routine, not just a niche hobby for gym bros.
And yet, neither Whoop nor Oura offers a strength tracking feature that actually works.
If you want to track strength workouts on existing wearables, you typically need to manually log every set, rep, and exercise. There are some attempts at automatic rep and exercise detection from Garmin and third-party Apple Watch apps, but the experience of using these products is unrefined compared to cardio or sleep features.
Even after logging everything manually, wearables underestimate or ignore muscle fatigue, and lack actionable insights on how users should adapt their training to achieve their goals.

Fort is a wearable that measures motion and heart rate to detect exercises, reps, sets, form, and fatigue that occurs while strength training. The device is a screenless band that can be worn on the wrist, attached magnetically to workout equipment, or worn with body straps elsewhere, so they can capture movements that wrist-only wearables miss.
They also track steps, sleep, heart rate, and cardio exercise, to provide you with a comprehensive picture of your health.
You can wear Fort all day, and the battery lasts a week with normal use.
Anyone who cares about their health and regularly does some form of strength training, like gym or pilates!