Read the text and choose the correct answer.

AntiGravity Yoga is a new kind of ... invented by Christopher Harrison - a former gymnast. It involves performing a ... of exercises in a hammock - like apparatus, in order to achieve a total-body workout.
So how do you prepare to have your world turned upside ... ?

" ... all expectations," most instructors say. It's important to have an open ... . You should listen ... your instructors and trust the hammock. They ... people do this if it weren't one hundred percent safe. You should know ... each hammock can carry ... to 970 kg. Once you're able to overcome that ... , you'll be able to enjoy all that the class has to offer.