Looking to boost strength and tone your arms, shoulders, chest, and back? An upper-body dumbbell workout is the way to do it ...

Kill two birds with one stone (dumbbell) in as little as 15 minutes using this trainer's abs and arms strength building workout.

Are you ready to test your limits? Burn fat, build muscle, and become unstoppable with this simple but brutal fitness challenge!

Start by adding the close-grip bench press to your workouts as a supplement to the standard benching you already. Start with ...