When most people think of a strong core or achieving abs, the first exercise that comes to mind is often sit-ups. While sit-ups have long been a go-to for strengthening the core, they're not always ...

To the untrained eye the L-sit might look like a simple pose, but don’t be fooled, this gymnastics move is one of the most brutally effective exercises out there. Yes, technically the L-sit is just ...

GHD sit-ups are the type of advanced abs exercise reserved for those in the gym who like to send their core muscles into meltdown. Think of them as the sister of the sit-up that likes to show off.

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images Build bulletproof core muscles using these three exercises without weights, ...