In fact, the Jefferson curl is more of a mobility exercise that strengthens the muscles of the lower back and core, as well as stretching the hamstrings, to help build a more resilient spine.
If leg raises are bad for your lower back, there are ways to fix them. Or, you could replace them with the double deadbug instead — a bodyweight abs exercise that helps strengthen your deep core ...
Having limited mobility in your back can negatively impact your running form. If your muscles are tight, your body won’t be able to move in its natural movement pattern, which can lead to injury. It ...
From upright, push your hips back to lower the bar ... This is a great posterior chain exercise to strengthen both hamstrings and glutes, while challenging the core,' explains Dick.