Knowing how to do ab crunches and sit ups with the proper technique can mean the difference between getting a six pack fast or getting a neck strain. Bad posture during sit ups is a constant ...

The exercise is a variation of an ab crunch, where one leg flexes while the other extends. At the same time, there is rotation at the lumbar spine – the part of the spine in your lower back ...

Crunches are a great way to work your abdominal muscles, but if you just can’t get on board with them – because, let’s be honest, they’re not the easiest exercise or that fun – there are ...