When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images If you have 10 minutes to spare and a couple of dumbbells to hand, then this ...

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

Find out how many sit-ups after 55 signal a strong, healthy core and use this 60-second test to track your strength over time.