What is Heart Rate Variability?Contrary to popular belief, the heart does not beat with metronome regularity. The heart, in fact, speeds up when you inhale, and slows down when you exhale. The difference is known as heart-rate variability (HRV) and is a great indication of your overall health, stress levels and readiness to train.How can I measure HRV?For anyone who enjoys competitive sports or getting fit, ithlete is the only iPhone or Android app that accurately measures, predicts and adjusts a personal training regimen to maximise your athletic performance whilst maintaining excellent health.Every morning during a 1 minute test ithlete measures your HRV, as well as your resting heart rate. After you have built up a baseline over a few days, the ithlete software algorithms compare your daily readings with baseline to determine if any significant changes have taken place. These are reflected in traffic lights for today's training and a chart to help you track trends. For more information visit myithlete.comHRV Fit Ltd. is an international software and biosensor development company. Founded in 2009, we initially focused on providing athletes with the knowledge and tools to maximise their training efforts and improve performance, enjoyment and health. HRV Fit Ltd’s flagship app, ithlete, was one of only 3 sensor based apps listed in the Sunday Times App List 2011. Reviews and praise for ithlete have appeared in numerous magazines including Cycling Weekly, Cycling Plus, Triathlon Plus, 220 Triathlon, Ultrafit and Runner’s World.