Hanging knee raises target upper abs by lifting your knees towards your chest while hanging from a bar. Using an overhand ...

Starting at a 90-degree angle, raise the leg to about hip-level and return to 90-degree angle. Use smooth, controlled movements and keep your core engaged. Repeat 15 to 20 times and switch legs.

Straight leg raises target the quadriceps, the muscles at the front of the thigh, without putting pressure on the knees. Lie on your back with one leg bent and the other straight.