Twins who took on vegan vs meat diet to see how it changed their bodies are wanting public to decide next challenge

Hugo and Ross Turner are looking to take on their next challenge.

The twins have so far taken part in five different studies, with researchers going on to analyze how their respective diets and fitness regimes affected their bodies in different ways.

A recent study of theirs saw the duo eat separate high carb and high fat diets – Ross being the one that ate more carbs, and Hugo taking one of the team and eating a higher fat diet.

As to why they did it this way round, Hugo explained to UNILAD: "Ross has got really high cholesterol (really, really high), so I took the bullet for him and I did the high fat diet."

The results of the study found that a higher carb diet is 'more beneficial for higher intensity running, lifting and exercise', while a higher fat diet is more suited to those who do lower intensity workouts.

Now, the Turner twins want UNILAD readers' help in deciding what challenge they do next.

Hugo and Ross have given three suggestions: fasting vs none-fasting diet, 1 rep vs 12 rep workout, and ab simulator pads vs sit ups.

You can cast your vote via the UNILAD Instagram page here, or by adding a comment below.

Ross (L) and Hugo (R) Turner have taken part in numerous twin studies (David M. Benett/Dave Benett/Getty Images)

Twins like Hugo and Ross are perfect for such studies because they're genetically identical.

Another advantage of twin studies is that 'researchers can estimate the proportion of variance in a trait attributable to genetic variation versus the proportion that is due to shared environment or unshared environment', says a 2016 study published on the National Library of Medicine's website.

It adds: "The use of twins can improve the statistical power of a genetic study by reducing the amount of genetic and/or environmental variability; the extent to which different assumptions matter may depend on which trait is being studied."

The duo are best known for their meat vs vegan study (theturnertwiins/Instagram)

One of Ross and Hugo's best-known challenges is their meat vs vegan diet. Hugo, who did the vegan side of the study, shared with UNILAD what the hardest part of following a plant-based diet was: finding vegan-friendly foods and recipes.

And one food he missed in particular? Garlic bread.

"I got so annoyed one day about being vegan," he recalled. "I said, 'Right, I'm just gonna go buy garlic bread, and that's it'.' And I came back, and then a friend was like, 'It's got butter in'."

Hugo then 'literally threw [the bread] across the room' after learning it wasn't vegan friendly (and I think I'd have done the same).