Dynamic apnea, variable weight and free emersion are categories of what activity?

动态屏息、可变体重和自由浮现是什么活动的特征？

Macdonald has lived a lot of her adult life in a medicated body with a variable weight.

麦克唐纳成年后的大部分时间都生活在一个体重可变的药物身体中。