If you’ve ever opened a fitness magazine, looked through Instagram workouts or read a personal training manual, chances are, you’ve seen or heard about Sit-Ups. A traditional Sit-Up, like the one pictured above, has been used as an endurance test and a go-to abdominal exercise for at least half a century. There are several reasons...

Planks are one of the most beneficial movements for your body around. When done properly they enable you to master finding—and holding—your neutral spine, can be used as the foundation for spinal stabilization, increase the mobility of your hips, activate your core muscles, and energize your entire body. They’re also the perfect exercise for anyone who sits at a...