Sylvester Stallone turned 80 on July 6. However, the Hollywood star isn't thinking about retiring and continues to train diligently.

How long should you hold a plank? A sports scientist explains recommended times for women and men on FITBOOK.

According to fitness expert Markus Bremen, building muscle is possible even in hot weather. However, there are a few things to keep in mind during training.

FITBOOK reveals what is known about George Clooney's (65) fitness. Surprisingly, his strategies are quite practical for everyday life.

Arnold Schwarzenegger Reveals His Personal Bests in Strength Training This is how strong the bodybuilding icon was in bench press, squat, and deadlift.

With a few simple tricks, you can turn your hotel room into a gym. This way, you don't have to skip your workout while on vacation.

How Do Professional Soccer Players Train Their Speed? FITBOOK Spoke with the Athletic Trainer for the RB Leipzig Women's Team.

Even after the end of his career, Zlatan Ibrahimović knows no downtime. The former Swedish soccer pro continues to train intensively.

How Many Bicep Curls Build Strong Muscles? The exercise alone won't work miracles, but a fitness coach has valuable tips

Actress Rosie O'Donnell has lost a significant amount of weight—with the help of a "weight loss injection" and a changed mindset.

Oscar winner Javier Bardem has revealed what matters to him when it comes to fitness at age 57 and which workout he enjoys.

The Burpee Challenge is designed to test endurance, strength, and resilience. Here's what the fitness test entails.

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

How does the pull-up machine really work? Tips on technique, grip types, and common training mistakes.

Former Navy SEAL DJ Shipley explains why effective training doesn't consist of extreme workouts. Instead, he relies on simple routines.

Leonardo DiCaprio isn't typically associated with peak fitness. However, he has had to get in shape for certain roles.

An expert explained to FITBOOK how long and far one should be able to ride a bike to be considered having basic fitness.

In "The Lord of the Rings," he galloped into the hearts of fans. Since then, Karl Urban has become an indispensable figure in the action genre.

Recently, Sharon Stone wowed fans with a bikini photo. FITBOOK investigated how the 68-year-old stays fit.

An Athletic Body Despite Age? Jude Law Shares Insights on Training, Routine, and the Path to Greater Fitness

In 2023, "Jurassic Park" star Sam Neill announced that he had cancer. He has now declared that he is cancer-free.

Fitness coach Markus Bremen explains on FITBOOK how to choose the right weight for deadlifts.

How to Find the Right Weight for Squats: Guidelines for Beginners and Advanced Lifters

How much weight should you lift in a bench press? There isn't a one-size-fits-all answer, but there are guidelines, as an expert explains.

The leg press is a classic in the gym. At FITBOOK, an expert shares how much weight you should be pressing.