A time-lapse GIF of a 26-year-old woman's dramatic weight loss has gone viral. And we can't stop watching.
The clip shows the woman's 88-pound transformation in the space of just five seconds.
Amanda - who wishes for her last name to remain a secret - started taking pictures of herself in 2011, to help her stay on track during her weight loss journey.
But with her photographs attracting more than three million views, Reddit user morphs_your_progress decided to create a GIF.
Hard work and dedication allowed Amanda to lose more than a third of her body weight in just one year, but now her efforts are all the more impressive - with the transformation happening before our very eyes, in five seconds.
Through following the Ketogenic diet (high-fat, moderate protein and low-carbohydrate) and regular exercise, her body has completely transformed dropping from 222lbs to 134lbs. And she has managed to keep the weight off.
"The Ketogenic diet is a sustainable way to eat," Sam Feltham, founder of Smash The Fat diet, told HuffPost UK Lifestyle. "For some people it is the only way that they'll ever be able to maintain a normal body weight, due to biochemical imbalances caused by overconsumption of sugar and refined carbohydrates."
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Open Image ModalHe adds: "The great thing about Ketogenic diets is that there is no calorie counting and you eat amazingly nutritious and tasty food such as whole eggs, butter and pork belly.
"A common objection to Ketogenic diets is that people feel like they won't be able to exercise without carbohydrates. This may be true at first as your body is switching from being a sugar burner to a fat burner, but this only lasts for about 3 weeks.
"During the first 3 weeks of following a Ketogenic diet I recommend people to do low intensity exercise, such as walking or slow weight lifting, and then after 3 weeks you can start to bring the level of intensity up."
Some believe that the diet is unhealthy, Sam explains. "Many people get it mixed up with a condition called ketoacidosis which only really happens with people who have type 1 diabetes or are alcoholic. Ketogenic diets work on the most part by lowering insulin levels to a normal level, which is a fat storage hormone."