The Wahoo Tickr Heart Rate Monitor is one of our favorite bike add-ons. Easily paired with any Bluetooth or ANT+ head unit, this device effortlessly measures heart rate. When we’re training with friends, we’ll always hear about how ‘perceived effort’ is the catalyst of all fitness measurements. Throw out power, speed, and cadence, the only thing we need to measure how hard we’re pushing our bodies is a trusted heart rate monitor.