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The first night in a new environment often leads to poor sleep. The reason is the "first night effect," which is well-researched.

A recent study by researchers from the United States suggests that yo-yo dieting can significantly affect muscle loss.

Strong forearms are an essential part of a balanced upper body workout. Discover which exercises specifically strengthen these muscles here.

On Instagram, the "Ozempic Salad" is captivating thousands of users. Here's what's in it and what a nutritionist thinks about the recipe.

The six-pack becomes visible in men and women at different body fat percentages. How can you achieve the goal of a washboard stomach?

Is It Worth Eating an Avocado Every Day? A Study Shows the Impact on LDL Cholesterol and Heart Health

Exercise is important for health, including that of children, but can kids do too much sport?

Helene Fischer reveals her plank record in a video. The singer is incredibly fit. FITBOOK shares tips on how you can improve your planking.

Too much sitting is unhealthy, that's clear! But is too little sitting just as bad? A long-term study now addresses this question.

Can Weight-Loss Injections Like Ozempic and Wegovy Influence Violent Behavior? A New Study Provides Clues.

On social media, millions are celebrating eggs with oil as the "Natural Wegovy." But what's really behind this weight loss trend?

Sea salt has a reputation for being more natural and nutrient-rich–but is table salt really worse? FITBOOK makes the comparison.

Strawberry pockets, wraps, and air fryer recipes demonstrate the versatility of rice paper—and why this snack is currently going viral.

Arnold Schwarzenegger's son, Joseph Baena, takes after his father and swears by a specific bicep exercise.

Some women respond to weight gain during menopause with even more cardio. Why this isn't a smart strategy.

The longer, the heavier? According to a new study, people who work more hours than average each day are more likely to be overweight.

Weed or Superfood? Our nutrition expert reveals which nutrients make ground elder so healthy—and whether it can be used as a medicinal herb.

After 50, muscle mass decreases. Dr. Michael Despeghel explains how men over 50 can become more athletic again through training and nutrition.

Poor sleep or cramps after exercise? Magnesium can help—and it's most effective in the right form.