take up
Separable
Begin a hobby or activity
She took up yoga last year.
Fill space or time
The sofa takes up too much room.
Separable
The object can go between the verb and the particle: turn the light off, or turn off the light. When the object is a pronoun it must go in the middle: turn it off, never turn off it.
Practise it
Add it to your daily practice or see every verb with up.
Further reading: take up on Wiktionary (CC BY-SA).