Which wearable tech does Janis Elspas recommend for fitness enthusiasts?

I’ve highlighted a few favorites for people who love fitness-focused wearables.

• A fitness in-shoe sensor (featured from CES 2014) that tracks activity from inside your shoe, blending performance data with everyday style.
• Xenoma e-skin smart shirt, an e-motion capture top for VR that can personalize everything from fitness to healthcare (from CES 2017’s Wearable Tech Innovations).

Would you like suggestions that are more fashion-forward, data-focused, or budget-friendly?