蜜芽传媒

For those who celebrate Christmas, it can be about treating your loved ones to the best food and drink there is.

It's usually a time to indulge in your favourite things ... and not worry too much about how much you're consuming.

That's probably why so many people start diets in the new year! But, in 2018, why not make a life-changing decision?

Veganuary is a campaign to get the world to swap to a vegan diet, Dan Geisler is a triathlete and ambassador for the initiative.

Put simply, being a vegan is about dispensing with all products derived wholly or partly from animals. So, what did Dan notice when he did that?

(Photo: Vegan Food, Credit: Getty Images)