Your friends have gone into hibernation (as has your social life), the weather is even colder and you're considering replacing meals with cornflakes because Christmas has wreaked havoc on your bank balance.
Yup, that's right - January has well and truly arrived. Here are 11 signs we know it's hit...
And your social life is dwindling
There's nothing on TV
And if you see the word diet once more you'll snap.
Then it's time to go back to work
Back to those early mornings
Back to the daily grind.
And, le sigh, back to the gym
There'll be no more overindulging
Unless it's on vegetables
But it's not all doom and gloom. There's hope yet...
January is a time to plan for the year ahead
To book holidays
To set goals
To save money
To embrace life
And to try something new.
So don't be blue!
January's not so bad after all...