All it takes is a tweak or two, and virtually any exercise for any muscle group can instantly become a core movement as well. It's all about positioning. One great example of this is the V-sit ...

Fitness is the key to a better life as a senior, but many older people aren't getting the exercise they need. Only 15% of those between the ages of 65 and 74 say they engage in regular physical ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images Sit-up haters, we've got a sit-up free workout ready and waiting for you to ...