That depends on what you mean by tone. If you want to built strength, you d on't need weights; there are tons of body weight exercises you can do.
If you mean target your arms for fat loss, that's not possible. Fat loss is a total-body process, and unfortunately, it's your genetics, not the exercises you do, that determines where you lose the weight first.
What's your goal when you say "tone"? Then we can help you find body weight exercises to help you reach that goal -- or alternate advice to help you achieve the results you want!
Writer, mother, wife, and breadwinner. I love to run, but running doesn't love me, so I'm switching to my low-impact bike.
I'm not pregnant, just fat: My blog. fatnotpregnant.blogspot.com/
| current weight: 185.0