Food challenge: a month without sugar, alcohol, grains, dairy and more
The popular Whole30 diet requires you to eat 90 meals consisting only of meat, seafood, eggs, vegetables, fruit and nuts
Could you rise to the Whole30 challenge? That means eating meat, seafood, eggs, vegetables, fruit and nuts, and nothing else for 90 meals straight. No sugar, alcohol, grains, legumes and dairy - in short, no fun - for a month.
The Whole30 challenge was created by sports nutritionists Melissa and Dallas Hartwig and outlined in their New York Times bestseller, It Starts With Food. Since 2009, many thousands have taken up the challenge.
Fans claim it relieves digestive troubles, banishes migraines and aches and pains. Positive effects include a tightened tummy, a good night's sleep and a lightened mood. Some believe the Whole30 diet even treats more severe conditions such as diabetes and attention deficit hyperactivity disorder.
Before you yawn and say "another fad", consider that the Whole30 is more of a self-experiment than a diet.
"Certain food groups like sugar, grains, dairy and legumes could be having a negative impact on your health and fitness without you even realising it," the Whole30 website says. "There is no food neutral; there is no food Switzerland - every single thing you put in your mouth is either making you more healthy or less healthy."