we've got do it at some point. >> ron hart, thank you. >>> a four-hour run or 17 hours of yoga. fun? not to me. that's what experts say you would have to do to burn off the thanksgiving calories. does that sound fun? think about it. 17 hours of yoga. fitness and nutrition expert mark mcdonald offers some alternatives. ♪two of a kind ♪for your information ♪we're two of a kind ♪two of a kind ♪it's my observation ♪we're two of a kind ♪like peas in a pod ♪and birds of a feather ♪alone or together you'll find ♪that we are two-oo-oo, oo-oo-oo, oo-oo-oo, of a kind♪ the treadmill this holiday weekend. >> by some accounts, you would have to do some serious and i mean serious exercising just to burn off the calories packed into most thanksgiving day meals. >> but that's why our buddy expert mark mcdonald is here. >> this is pretty heavy information. according to the american council on exercise, we cannot believe this. if you packed in about 3,000 calories for your thanksgiving day meal, twice what most women should be eating. >> exactly. >> to burn off that, you would have to run at a mo