what exercise can i do to tone under my upper arms?

Answer 1

If you have hand weights (or just use cans of food), hold the weights in your hands chest height with elbows straight out. Bend at the waist 90 degrees (facing parallel to floor). Bring arms up and back as far as comfortable, keeping elbows bent. Start out with a few reps, add more every few days. Like 8 reps, then stop for a few seconds, and repeat 8 reps, increasing as days and weeks go by.

Worked for me.

Info added:
Look at these websites for some really good tricep workout tips:
http://www.hydroxycut.com/WOMEN/WORKOUT/EXERCISES/ARMS/arms_triceps_dips.shtml

http://www.medicinenet.com/script/main/art.asp?articlekey=56819

http://pilates.about.com/od/pilatesexercises/ht/MagicCirBckArms.htm

http://www.fitnessmagazine.com/fitness/category.jhtml?categoryid=/templatedata/fitness/category/data/1145287956294.xml&ordersrc=google1triceps_cgy&cobrandId=ww5&s_kwcid=ContentNetwork|379744282

Answer 2

Reverse push up. Stand with your back to a counter top, about 2' away from it, place hands on counter behind you, fingers forward. Lower and raise yourself.