Get more from side jackknives while keeping your risk of injury to a minimum by following … See more

Not sure if side jackknives deserve a place in your core workouts? Consider these benefits and then decide! Easy to learn – the side jackknife is a challenging yet straightforw… See more

While side jackknives are a mostly beneficial exercise, there are also a couple of drawbacks to consider: Limited overload – even if you work up to doing side jackkni… See more

Side jackknives are a highly effective core exercise, but that doesn’t mean you need to do them all the time. There are plenty of variations and alternatives you can use to keep your … See more

If you want a strong, great-looking midsection, you need to pay as much attention to your obliques as you do your rectus abdominis. While the rectus abdominus … See more