Your arms do a lot for you, so it's a good idea to give them some TLC as often as you can. 

You don’t have to lift heavy barbells to strengthen and tone your arms (though bigger weights can supercharge your sculpting). This lightweight arm workout uses 1kg weights and still produces big changes over time. If you need to use heavier weights to really work your muscles, just listen to your body and take note of how your shoulder joints feel as you lift; switch to lighter weights if you experience discomfort.

Aim to do the whole series below three or four times a week for best results. You should try to flow from one exercise to the next without stopping. 

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