Arm day is my favorite. I love the feel of my biceps straining, my triceps burning, my arms getting stronger. But one thing I could definitely do without? Push-ups! Although this common exercise ...

And Girvan isn’t kidding! The trainer uses two 27 lbs dumbbells for this workout, but recommends using a weight that feels right for you. Watch Caroline Girvan's 10-minute dumbbell chest workout ...

What is the workout? The workout, created by YouTube trainer Caroline Girvan, focuses on 12 whole minutes of dead bug variations. You’ll need a set of dumbbells to get the most out of this ...