![4000 calories?! Really?! I ran 8km (5miles) today as part my coaching endurance plan. Anyone believe that this is possible? Also, is anyone using any heart rate monitors (HRM's: chest straps, wristbands, 4000 calories?! Really?! I ran 8km (5miles) today as part my coaching endurance plan. Anyone believe that this is possible? Also, is anyone using any heart rate monitors (HRM's: chest straps, wristbands,](https://i.redd.it/867agj0yatj31.jpg)
4000 calories?! Really?! I ran 8km (5miles) today as part my coaching endurance plan. Anyone believe that this is possible? Also, is anyone using any heart rate monitors (HRM's: chest straps, wristbands,
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Freeletics Wear: Endurance Hoodie Jacket Dark Denim | Dennis Boerschig - Fitness Fashion Lifestyle Nutrition
![Freeletics Wear: Endurance Hoodie Jacket Dark Denim | Dennis Boerschig - Fitness Fashion Lifestyle Nutrition Freeletics Wear: Endurance Hoodie Jacket Dark Denim | Dennis Boerschig - Fitness Fashion Lifestyle Nutrition](https://dennisboerschig.de/wp-content/uploads/2018/01/DSC04998-1440x960.jpg)