These are a staple in my nutrition plan for training & competing in ultramarathons. The flavors are slight enough to be able to tolerate for hours and you still get enough electrolytes to legitimately stave off muscle cramping. With 360mg Sodium & 100mg Potassium, they replace the need to take oral salt tabs which can be difficult to eat while running. Love the grape flavor these days, but they have a bunch of flavors that are awesome. I love nuun.