This month, your challenge is to train arms for 30 consecutive days (plus one bonus workout if you're really into the plan). The catch: Not every single day is going to be biceps curls. Some days ...

This 30-day arm challenge includes arm workouts to help strengthen and tone your biceps, triceps, and forearm muscles while boosting your muscular endurance. This challenge also involves core and ...

The exercises chosen for our 30-Day Arm Challenge are ones the American Council on Exercise (ACE) has pinpointed as best for activation of the primary muscles used — in other words, ...

Over 30 days, you can strengthen and tone your chest, arms, legs, butt, and abs with challenging and highly effective total-body exercises. Crush the 30-day challenge, and you'll reap major ...

More: 12-day fitness challenge Image: Becci Collins/SheKnows Jumping jacks. Just like you used to do in PE class, start with your feet together, your arms at your sides. Hop both feet out ...

They're a fantastic exercise to keep in your fitness toolbelt because they can help strengthen so many crucial areas of your body. That's why PS created a 30-day plank challenge you can do at home.

By the end of the WH 30-Day Workout Challenge, you can expect to see some pretty awesome results. You’ll likely notice some increased muscle definition and higher energy levels—score.

Enter: the Women's Health 30-Day Workout Challenge—a comprehensive, easy to follow, exercise plan with strength training and cross training, so you'll never get bored.

This 14-day dumbbell workout challenge targets your arms to build muscle and strength. After a two-day rest, you can do it again for a 30-day challenge.