Make your biceps curls more challenging by curling both weights at the same time.

Image Credit: vitapix/E+/GettyImages There are a few surefire ways to make just about any workout a little more challenging. Going slower on the lowering portion of an exercise, adding a pause at the top of a move and — one you might not be as familiar with — ladder workouts.

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 No, we're not talking actual ladder (though agility ladders can give you a great cardio workout); we mean increasing your rep count with each set. So for example, if you start with 5 reps, then you might do 7, then 9, then 11.

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 Give your arms and shoulders the ultimate burn with this 20-minute dumbbell ladder from Carolina Araujo, New York-based certified personal trainer. Each time you do this workout, challenge yourself to do more reps than you completed last time — your upper body will thank you.

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 Related Reading How to Strength Train With Dumbbells and the Best Exercises to Try

Try This 20-Minute Dumbbell Ladder Workout ​Do:​ each of the exercises below for 3 reps, pausing 40 seconds after you complete the circuit. Then, you’ll do each exercise for 4 reps, taking a 40-second recovery afterward. Give yourself a 20-minute time cap and see how many rounds you get through, adding one rep of every exercise to each round.

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 Move 1: Dumbbell Shoulder Press      
        Skill Level
       
        All Levels
      
        Activity
       
        Dumbbell Workout
      
        Body Part
       
        Shoulders

Begin standing or seated with a flat back, feet rooted into the ground, holding a dumbbell in each hand. Lift the weights above your shoulders with your elbows bent at 90 degrees. On an exhale, brace your core and press both dumbbells overhead. Lower the weights back to the starting position with control.

  Show Instructions
  Move 2: Dumbbell Lateral Raise      
        Skill Level
       
        All Levels
      
        Activity
       
        Dumbbell Workout
      
        Body Part
       
        Shoulders

Start standing with a dumbbell in each hand, arms at your sides. Keep your back flat and knees slightly bent. Keeping your core braced, raise the weights out to your sides until they reach shoulder height. Lower the weights slowly back down to the starting position.

  Show Instructions
   ​Check out more of our 20-minute workouts here — we’ve got something for everyone.​

Move 3: Alternating Dumbbell Curl
Skill Level

        All Levels
      
        Activity
       
        Dumbbell Workout
      
        Body Part
       
        Arms

Start standing with your feet hip-width apart, arms at your sides with a dumbbell in each hand. Brace your core and on an exhale, curl the right dumbbell up to your shoulder, keeping the elbow close to your side. Lower the dumbbell back down to your side with control. Then, repeat the motion with the left dumbbell, bringing the weight up to your shoulder, elbow tucked. Lower down to the starting position with control. That’s one rep. Alternate left and right with each curl.

  Show Instructions
  Tip To make this exercise more challenging, curl each dumbbell at the same time. Otherwise, curling both arm counts as one rep.

Move 4: Dumbbell Front Raise
Skill Level

        All Levels
      
        Activity
       
        Dumbbell Workout
      
        Body Part
       
        Arms and Shoulders

Begin either seated or standing, holding a dumbbell in each hand at your sides. Brace your core and raise the weights in front of your body until they reach shoulder height, palms facing down. Lower the weights back to the starting position with control.

  Show Instructions
  Tip If raising both dumbbells at the same time is too difficult, alternate lifting one arm at a time.

Move 5: Dumbbell Kickback
Skill Level

        All Levels
      
        Activity
       
        Dumbbell Workout
      
        Body Part
       
        Arms and Back

With a dumbbell in each hand, stand with your feet shoulder-width apart and hinge your hips back, maintaining a flat back. Your upper body should be at a 45-degree angle to the floor. Bring your arms to your sides, pretending your elbows are glued to your body. This is the starting position. Extend your arms straight back with control and squeeze your triceps at the top. Bend your elbows and slowly lower your arms back to the starting position.

  Show Instructions
  Tip As you perform this exercise, keep your neck long and back flat.

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Make your biceps curls more challenging by curling both weights at the same time.

Image Credit: vitapix/E+/GettyImages

Image Credit: vitapix/E+/GettyImages

How to Strength Train With Dumbbells and the Best Exercises to Try

        Skill Level
       
        All Levels
      
        Activity
       
        Dumbbell Workout
      
        Body Part
       
        Shoulders

Begin standing or seated with a flat back, feet rooted into the ground, holding a dumbbell in each hand. Lift the weights above your shoulders with your elbows bent at 90 degrees. On an exhale, brace your core and press both dumbbells overhead. Lower the weights back to the starting position with control.

  Show Instructions
  


        Skill Level
       
        All Levels
      
        Activity
       
        Dumbbell Workout
      
        Body Part
       
        Shoulders

Start standing with a dumbbell in each hand, arms at your sides. Keep your back flat and knees slightly bent. Keeping your core braced, raise the weights out to your sides until they reach shoulder height. Lower the weights slowly back down to the starting position.

  Show Instructions

​Check out more of our 20-minute workouts here — we’ve got something for everyone.​

        Skill Level
       
        All Levels
      
        Activity
       
        Dumbbell Workout
      
        Body Part
       
        Arms

Start standing with your feet hip-width apart, arms at your sides with a dumbbell in each hand. Brace your core and on an exhale, curl the right dumbbell up to your shoulder, keeping the elbow close to your side. Lower the dumbbell back down to your side with control. Then, repeat the motion with the left dumbbell, bringing the weight up to your shoulder, elbow tucked. Lower down to the starting position with control. That’s one rep. Alternate left and right with each curl.

  Show Instructions
  


        Skill Level
       
        All Levels
      
        Activity
       
        Dumbbell Workout
      
        Body Part
       
        Arms

To make this exercise more challenging, curl each dumbbell at the same time. Otherwise, curling both arm counts as one rep.

        Skill Level
       
        All Levels
      
        Activity
       
        Dumbbell Workout
      
        Body Part
       
        Arms and Shoulders

Begin either seated or standing, holding a dumbbell in each hand at your sides. Brace your core and raise the weights in front of your body until they reach shoulder height, palms facing down. Lower the weights back to the starting position with control.

  Show Instructions
  


        Skill Level
       
        All Levels
      
        Activity
       
        Dumbbell Workout
      
        Body Part
       
        Arms and Shoulders

If raising both dumbbells at the same time is too difficult, alternate lifting one arm at a time.

        Skill Level
       
        All Levels
      
        Activity
       
        Dumbbell Workout
      
        Body Part
       
        Arms and Back

With a dumbbell in each hand, stand with your feet shoulder-width apart and hinge your hips back, maintaining a flat back. Your upper body should be at a 45-degree angle to the floor. Bring your arms to your sides, pretending your elbows are glued to your body. This is the starting position. Extend your arms straight back with control and squeeze your triceps at the top. Bend your elbows and slowly lower your arms back to the starting position.

  Show Instructions
  


        Skill Level
       
        All Levels
      
        Activity
       
        Dumbbell Workout
      
        Body Part
       
        Arms and Back

As you perform this exercise, keep your neck long and back flat.