It's World Laughter Day!

Although these Burchell’s zebras are probably fighting, it looks like they are having a laugh. Maybe at a classic animal joke: Why did the lion spit out the clown? Because he tasted funny. Or perhaps not. Anyway, World Laughter Day is celebrated on the first Sunday of May to remind people of its very real physical and mental health benefits. Experts (yes, there are experts) agree that laughing lowers blood pressure, releases endorphins, works your abs, reduces stress hormones and even boosts T cells that fight infection. And even if you’re not feeling it, faking it still works.
© Richard Du Toit/Minden Pictures