This core workout involves just four moves, but with dumbbells and minimal rest, it delivers a serious burn and maximum results.

To ramp up the challenge, some of these moves incorporate a dumbbell, which not only increases difficulty but also helps ...

Start with 5- or 10-pound dumbbells, or a lighter weight if needed. Sit straight up in a chair or on a bench, with your knees at a 90-degree angle to the floor. Hold the dumbbells with your palms up.

A gym dumbbell workout is a simple but effective way to get stronger and boost your balance and stability in one spot ...

If you don’t have access to a dumbbell or kettlebell to perform them ... you are really engaging your obliques in a way that sit-ups and planks cannot do,” says Steve. Don’t be surprised ...

Lay down with legs and knees bent. Hold a dumbbell or medicine ball at chest. Reach weight up over head and sit up. With control, lower down and return weight to chest. That's 1 rep. Good for ...

I don't have any real issue with sit-ups, but my tailbone ... great deals and helpful tips. To ramp up the challenge, some of these moves incorporate a dumbbell, which not only increases ...