Endurance Fuel: What’s important to understand is that even though you may be burning 500+ calories/hour, your body physiologically can only process 200-300 calories per hour. So, in general, we recommend starting off with 200-300 calories (2-3 scoops) of Endurance Fuel in 18-24oz of water per hour for 2+ hr workouts. For workouts less than 2 hours we recommend 100-200 calories (1-2 scoops per 18-24oz of water per hour. Listen to your body. If you are feeling hungry dial up the number of calories, if feeling overly satiated or full, dial it back. The right amount may also vary based on the conditions (think temperature and humidity) and length and your intensity (how long, how hard, how far). When it’s hotter than your usual training temperature, keep the same calorie rate per hour, but increase water to thirst.