Justin Timberlake is suffering from a post-Christmas "sugar hangover".

The singer-and-actor is finding it difficult to get back to work following his fun festive break.

Timberlake admits he over-indulged over Christmas, and is now suffering the consequences.

He jokingly asked fans on Twitter: "How long does it take you guys/girls to get going in the new year after the holidays??? I think I still have a sugar hangover from Christmas (sic)."

Timberlake also responded to a couple of replies on the social networking site.

When one fan wrote: "I dunno but I'm still eating like its Christmas .." the hunky star replied "Hahaha! Me too!!! #itsaproblem."

Timberlake is currently enjoying life as a married man after walking down the aisle with Hollywood actress Jessica Biel at the end of last year.

After tying the knot in Italy in October, the pair revealed: "It's great to be married, the ceremony was beautiful and it was so special to be surrounded by our family and friends."