You can lose a lot of water doing hard work in the summer.
I've been through a few different brands looking for something I could drink without it attacking my stomach.
This the only product I've found that I could drink multiple bottles of without the cramps I get from other brands.
The important part is that I don't go through the energy loss after working a couple of hours in the heat if I can grab a bottle cold Tailwind from the fridge.
Actually it rather amazing how important electrolytes are to keeping your energy levels up during the day.
This will be the only product I use on long runs. It truly is one of the best endurance fuels around. I used only Tailwind and only the berry version.
Very impressed with berry endurance fuel. This product makes it easy to stay fueled on long rides and does not cause me any stomach issues.