10. You're not lifting 20 lbs. Each arm has 10. If they were on a barbell, then you would track 20, because you're lifting the whole thing together. ;)
Realistically, it doesn't change the calorie burn or anything (it's just a token amount based on time) so what matters is that you're consistent whichever way to choose to go.
Edited by: DRAGONCHILDE at: 2/5/2013 (10:53)
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: 190.6