But which energy gels, drinks and chews are going to have you sprinting for the finish line, rather than sprinting for an unscheduled stop at the nearest portaloo? We're here to help. We’ve ...

Perfect for on-the-go energy, each chew contains the same caffeine as an 8-ounce cup of coffee. Two chews contain the equivalent of a double shot of espresso. The caffeine in each chew comes from ...