Your core is an integral part of daily functions and your athletic performance—it’s used every time you sneeze, cough, have a bowel movement, pick things up, or do something more obvious… like sprint.

You can run all the miles on the road and do as many speed sessions on the track that you want, but the secret to getting that next PR likely comes in the gym. And we don’t mean more treadmill runs.

I’ve always found that variety is key to keeping myself engaged in strength training. If I stick to the same workout or exercises for too long, then boredom sets in and I become less inclined to train ...