Oh summer. How we love thee. With long sunny days, barbecues, beach and pool outings, and just a little R&R, how could this not be a favorite season to many? With all of the fun activities that summer ...

Plank jacks are a combined cardio and core-strengthening exercise. They can help you strengthen the muscles of both the upper and lower body. Adding plank jacks to your exercise routine a few times a ...

David Robertson is a group fitness instructor at Chicago Athletic Clubs. The name does this sequence justice: Your muscles will be barking by the end. As the DAREBEE site says of the series: “Some ...

A plank is more difficult than it looks. You have to use all of your muscle groups, including your core, abs, arms, back, shoulders, glutes and legs. It’s normal to struggle to do a plank. Many of my ...

A CSCS trainer shares 5 morning core exercises that rebuild stability and strength in adults over 55—no equipment needed.