Dietitians explain why the watermelon diet, eating nothing but watermelon for days, is horrible for health.

The athleticism each cheerleader has is seriously impressive.

All the stunting, tumbling, and flying through the air requires an incredible amount of strength and skill.

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Um, hold up.

As someone who comes back from a two-mile jog completely ravenous, this seriously confounded me.

Your body is very capable of detoxing itself thanks to the kidney and liver, she says.

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registered dietitian

Simply put, this is not adequate nutrition, she says.

The lack of nutrients and total calorie intake can increase fatigue while decreasing reaction time.

This can lead to an increased risk for injury, she says.

Close-up of sliced purple cabbage,

Bodgen says this pop in of extreme calorie restriction affects the brain just as much as the body.

It will likely affect different people in different ways.

The bottom line is this: Watermelon is a healthy, super-hydrating food.

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But it doesnt have enough nutrients for someone to live off of for days.

A healthy diet includes varied and adequate nutrition, something no one food can provide alone, Lemein says.

This is one eating plan no one should be cheering for.

A hand is stirring a sourdough starter in a glass jar, on a kitchen countertop. The light casts a warm glow, highlighting the ingredients inside the jar.

registered dietitian

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