lace it up - getting up and fighting for your life, even if it means your

getting up and fighting for your life, even if it means your shoes are ruined and your hair is on fire

'Lace it up, I'm going to fight my dad for the last slice of pizza.'

'Laced it up and went to work even though my hair was on fire.'

'Laced it up and walked to the store in the middle of the night.'