In the beginning, there was the humble "selfie". Just the one. Then someone's mate did it too. Now, it's mind-boggling to even imagine how many selfies are floating around the web.

But the selfie is not alone. It spawned sub-categories, like the "belfie" (bum selfie), the "helfie" (hairstyle selfie) and then the "drelfie" (drunk selfie). Apparently.

Recently, a new sexier selfie love child has become a thing. Namely, the "healthie" – the selfie for healthy people. In other words, it's pictures of sexy girls in glorious, skin-tight sportswear. And we're fine with that.

Here are 10 girls who are excellent at staying fit...

01 Staci Ann

02 Candice Swanepoel

03 Lauren Loretta

04 Lucy Mecklenburgh

05 Nina Agdal

06 Anastasia Ashley

07 Georgia Salpa

08 Anna Herrin

09 Arianny Celeste

10 Jessie Andrews

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