Key Takeaways There is no single sit-up benchmark that adults should aim for at different ages.Sit-ups mainly test the endurance of your outermost abdominal muscle, the rectus abdominis.Planks, dead ...

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 ...

There are few exercises more synonymous with getting abs than the humble sit-up – but, according to some experts, you might be better off swapping your sit-ups for an easy yoga pose instead. A widely ...