Why You’re Dripping

Sweating is just your body’s AC unit. When the rally drags on and the sun is beating down, you sweat to offload heat. But that system isn't perfect. As you lose fluid, your blood gets thicker, your heart has to work harder and suddenly you feel sluggish.

Water helps, but it’s usually not enough on its own. You’re sweating out salt, potassium and magnesium. The stuff your muscles need to fire correctly. If you don't replace them, you’re looking at cramps and brain fog right when you need to serve out the set.

Whatever Works

Runners and cyclists are obsessed with energy gels and nutrition and honestly, tennis players should probably be too. They’re an easy way to get sugar into your blood when your legs feel like lead.

But you don’t always need "performance nutrition", sometimes a handful of gummy bears is exactly what you need to wake up. Sometimes a Coke at a changeover tastes better than any sports drink ever could. And let’s be real: The post-match beer is a tradition for a reason. Scientifically, you need electrolytes. Culturally? You need Haribo and Grieskirchner. As long as you’re putting energy back in the tank, it all counts.

The Bottom Line

To last three sets, you have to stay ahead of the curve. Drink before you’re thirsty. Replace the salt you lose. Eat some carbs. Whether that’s a banana, a fancy gel, or some candy. The game is a lot more fun when your legs don't feel like wet noodles.