To work the lateral muscles while doing sit-ups, twist slightly to the left for five sit-ups, and then do the same thing to the right for five repetitions.

To ramp up the challenge, some of these moves incorporate a dumbbell, which not only increases difficulty but also helps ...

Are sit-ups good or bad for you? For a while ... Unlike hanging leg raises, the gentle twist helps engage even more core muscle, but if you know your hips tend to steal the spotlight, keep your knees ...

I’m the first to admit I normally rush through my reps when it comes to sit-ups, but the zombie variation forced me to slow down. On the days where I added the oblique twist at the top ...

Optimal sets and reps: 3 to 4 sets of 15 to 30 reps As you come up in the traditional sit-up, twist your torso toward one side, bringing the opposite elbow toward the knee on the twisting side.