Getting fit is all about getting high. Supermodels like Natasha Poly and Angela Lindvall are suspending their lithe bodies in the air with elastic bands. (It’s known as “aerial yoga.”) Celeb trainer Tracy Anderson has taken the trend to new heights by offering private lessons in Stacking, in which her signature pulsing and torquing moves are done in a prone position—albeit six feet in the air, supported by an instructor. Talk about higher learning.

READ MORE: How to train like a fitness model

See below for more celebs who are obsessed with this new fitness phenomenon.

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