Part of the morning routine is to weigh each puppy and compare the weight to yesterday’s so we can make sure each one is growing at the rate they should.  Biff figured out that a wiggly puppy is best weighed if you warm the towel (that lines a shallow bowl) in the microwave for a few seconds just before setting the puppy down for its weigh-in.  Many of them relax into the warmth and become still enough for us to get a solid weight.  For others we get the best read we can as the numbers bounce around from the puppy jiggling.