I’d never claim that the plank is a "bad" core exercise. It’s great for working the deep stabilizing muscles in your core as well as your abs and lower back, and it’s an approachable move that most ...

If you want to work your abs, you’ll probably default to sit-ups, planks or crunches. They sure are effective, but celebrity trainer Ben Bruno, who’s worked with the likes of Justin Timberlake and ...