gains o' clock - The time when your body is like, 'Nope, not today,' but your

The time when your body is like, 'Nope, not today,' but your gains o' clock is like, 'You're gonna lift anyway.'

'Gains o' clock hit me like a ton of bricks.'

'I was about to eat a whole pizza, but gains o' clock came and ruined my day.'

'My gains o' clock is louder than my alarm.'