dumbell exercise for the forearms how to?

[maxitwist07]

Hi, id like to start working up my wrist muscles as they are quite thin, i think this is what im meant to do? Exercise: Lateral Dumbbell Raises [423] - Fitness.com
But im not sure am i meant to hold it at the top or just raise and lower, also do i have to do them at the same time, and how much reps should i be looking to do?

the dumbells i use for bicep curls are 7.5kg each and i do 25 on each arm, but for these ive had to lesen them to just 3kg each. I had it at 5 but it felt really bad on my shoulder muscles. Actually, this exercise feels heaviest on my shoulder so is it the right one? My shoulders are quite nice as is xD

 

[plugeye]

no, those are for shoulders.
try this one:
grab a set of 30s. keeping good posture, take a walk around the gym or where ever you can (sort of like working with a wheelbarrow). go as long as you can with a strong grip on the dbs until you can no longer hold them. if your forearms arent punished, next time try 35s or 40s, etc.

 

[PLB_old]

Yes, the exercise that is posted is for your shoulders. It incorporates forearm muscles in order to keep your wrists straight, but your forearms are not the target for that exercise.

The exercise like the one listed by plugeye would be great for forearm strength. If you want to use dumbbells, you can do an exercise like this: Exercise: Dumbbell Reverse Wrist Curls [12] - Fitness.com. This exercise shows palms facing down, but you can do this with your palms up or thumbs up as well.