SIT-UPS are one of those exercises that refuse to die. They’ve been praised, blamed, cancelled, revived and still show up in boot camps, military tests, and random living room workouts everywhere. So ...

Sit-ups have seemingly been a staple in our training programmes since time began. Despite their omnipresence, they are ...

The classic sit-up is a workout staple. Whether you've become all too familiar with the movement in your weekend HIIT class or eked out those last few reps while following a home workout video, you've ...

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. It’s kind of strange, ...

Dr. Shields is a physical therapist with a background in English Literature and a passion for healthcare and education. She hopes to combine her clinical expertise with her love of writing, establish ...