The ProForm Carbon Tlx Treadmill makes it possible to walk, jog, run, and hike around the world from the comfort of your home. With an iFIT subscription, just connect your own smartphone or tablet with Bluetooth to follow expert iFIT Trainers through thousands of outdoor workouts spanning the most beautiful locations across all seven continents. iFIT's intelligent fitness technology can control your treadmill to deliver workouts that are personalized to you, no matter where you are in your fitness journey. SmartAdjust can automatically change your 0% to 12% incline and your 0-12 Mph speed based on your workout history and performance for a hands-free, immersive experience. Connect a heart rate monitor using Bluetooth and turn on iFIT s ActivePulse feature so that the automatic treadmill adjustments change based on your target heart rate zone. The CoolAire has three modes of intensity – low, medium, and high – so you can stay cool during the toughest moments.