Forget the grueling two-hour chest days. Leading exercise scientists reveal that you only need 4 to 8 high-intensity sets per ...

To achieve well-defined pecs, it's essential to follow a workout routine that includes multiple sets for each exercise. This not only boosts endurance but also promotes muscle growth. By doing ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. The major muscle in ...