According to the Vegetarian Society, livestock farming accounts for nearly a fifth of human-related greenhouse gas emissions. For example, cows produce methane, a greenhouse gas which has 25 times the global warming impact of carbon dioxide.

This, combined with the deforestation which is often required to create space for cattle to graze, makes cattle farming a huge contributor to climate change.

Cows also have a massive water footprint. To produce one kilogram of beef, it takes 15,415 litres of water (largely because of the crops that cows eat). According to the WWF, two-thirds of the global population may experience water shortages by 2025.

So if you’re concerned about climate change - and you should be - try putting down the filet mignon, skipping that trip to Five Guys and eating more meals based on beans, lentils and nuts.

Want some inspiration for a flexitarian diet? Check out these 20 vegetarian dishes you can make in 30 minutes or less

Why a flexitarian diet could help save the planet, according to experts