An exercise researcher in New Zealand determined that drinking an ice slushie before exercising extended runners' endurance by an average of 10 minutes — a tidbit that might come in handy when you're tackling that 5k in summer heat.
Photo by abbamouse.
It's no surprise that a hot day can easily kill your endurance during physical activity, as the article points out:
Blood is directed to the skin for cooling, which means it is diverted from working muscles. The hotter it is, and the harder the effort, the harder exercise becomes. Eventually, you slow down or stop, unable to go on.
Companies and researchers have worked to create gear intended to combat this problem, from cooling vests to portable cold-water baths, but the slushie solution is one pre-cooling effect that works on-the-cheap.
All you have to do is drink an ice slurry, also known as a slushie, before exercising. In a new study, he reports that young male recreational athletes who drank a syrup-flavored ice slurry just before running on a treadmill in hot room could keep going for an average of 50 minutes before they had to stop. When they drank only syrup-flavored cold water, they could run for an average of 40 minutes.
Keep in mind that the slushie solution isn't going to be of much help with longer workouts (don't expect it to keep you going through an entire marathon). If you're exercising to burn some calories, the sugar-y syrup probably isn't the best thing, either. That said, if you're aiming to get a little more performance out of those muscles of yours on a hot summer day, a slushie may be just the ticket.