Every Saturday morning for the past year, Stephen and Roger had stolen the bodies of their wives, Rebecca and Heidi. The two women had been royally pissed off, but the men would never reveal what they were doing with the time in their wives' bodies. One day, they managed to track down their husbands and were quite surprised to find them doing yoga.
"You didn't notice all this time?" Stephen laughed.
"Didn't you realize how in shape your bodies had gotten over the past year?" Roger chimed in, "We were just doing our part to help you both get back in to shape after giving birth!"
The women felt silly. They had neglected their bodies since giving birth, and their husbands were really only trying to help.