The starburst side plank variation strengthens the shoulders, abs and obliques. Here's why we love it at Tom's Guide.

Margot Robbie, pictured here on the set of the "Barbie" movie wearing a pink and white gingham dress, trained with David Higgins to get into top character shape. (Photo: Everett Collection) This ...

YOU KNOW THE SAYING: Work smarter, not harder. You may have already incorporated that mentality into your training routine, subbing unfocused, 60-minute workouts for strategic 30-minute sessions, or ...

‘In your 20s and 30s, being able to plank for 45-60 seconds is a solid marker of good core endurance,’ says PT Joseph Webb, ...

Exercising is key to longevity; it’s been associated with everything from improved cardiovascular health to increased ...

Test your strength after 50 with a 60-second forearm plank that reveals exceptional core and full-body stability.