Instability is not a good thing in most aspects of life, but it’s great for fitness training, helping to strengthen your heart, posture and coordination. Trying to balance on a moving surface while ...

How can someone with a well-conditioned core get a leg up on her abdominal training? For starters, she can try more difficult exercises. A tough one is the one-legged crunch on a dyna disc ...

Strong glutes make you more powerful in the sports you play. They bolster the back, assist in hip mobility and can help keep lower back pain at bay. They also make your jeans look good. One exercise ...