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. Arm day can be one of ...

Push-ups are a staple in any workout routine, but if you're looking to intensify the work on key areas like your triceps and the inner part of your chest, diamond push-ups are your next level. No ...

When strong, toned arms are a goal, people tend to focus on the biceps. But the triceps are actually the largest muscle in the arm, making them an essential area to target when it comes to ...

All the tricep workouts, exercises and expert-approved tips you need to add serious size to your upper arms ...