Heart Rate Variability is possibly the easiest to use tool that’ll make the biggest difference to the results you get from your training. Only train hard on the days when your body can absorb the training - and never waste a moment of your valuable training time again! Dr. Marco Altini is the creator of the HRV4Training App. In this episode, we dive deep into heart rate variability, and why it might well be the most important training tool to getting the most out of your limited training time! The HRV4training app is available on both the Apple store and Google play, priced at £10. Well worth the money for all the benefit it brings! Sponsors precisionfuelandhydration.com This show is brought to you by Precision Fuel & Hydration, who have a range of tools and products to help you personalise your fuelling and hydration strategy so that you can perform at your best.  Long time listeners of the show will know them as “Precision Hydration”, but they’ve changed their name to reflect the fact that they’ve been helping athletes nail both aspects of their performance for a long time now. Everyone sweats differently and the amount of fuel we require varies depending on factors like the duration and intensity of our activity, so a one-size-fits-all approach to fuelling and hydration just doesn’t cut it. Head to precisionfuelandhydration.com and use their free online Sweat Test and Quick Carb Calculator to understand your fluid, electrolyte and carbohydrate needs during training and racing. Then book a free one-to-one video consultation with the team to refine your hydration and fuelling strategy for your next race. As a listener of the show you can get 15% off your first order of fuelling and hydration products - listen to the show for the discount code! Quick Carb Calculator Free online Sweat Test Book a free 20-minute hydration and fueling strategy video consultation Didn't catch the discount code to get 15% off your first order of fueling and hydration products, drop Andy and the team an email at hello@precisionhydration.com and they'll be happy to help you Like what you heard in this interview? Join hundreds of other age group triathletes making the most of their limited training time, training with Team OxygenAddict! http://team.oxygenaddict.com - The most comprehensive triathlon coaching program for busy age groupers. To find out more, You can book a zoom, phone or skype call with Rob or the Team here Join the Oxygenaddict Triathlon Community page on facebook here: https://www.facebook.com/groups/666558563716897/ Listen on Spotify: http://bit.ly/OATriPodSpotify Listen on iTunes: http://bit.ly/OATriPodiTunes