Say goodbye to basic crunches and hello to three muscle-torching crunch variations to build core strength. For this workout, you just need one of the best yoga mats and a resistance band or loop band ...

Bore your core? If the only way you're training your abs is by doing crunches, you might. Having an arsenal of abdominal exercises is essential to keeping your abs strong and your movements graceful.

While many workout regimens flame out as quickly as it took them to start trending, others stand the test of time. Exercises like tai chi, running, swimming, hiking and yoga, for instance, have been ...