New research suggests that people who live along tend to be thinner. One theory holds that couples who live together are likelier to share meals and cook together. TODAY’s Savannah Guthrie asks: Why wait until you’re married to gain weight?Dec. 4, 2015
UP NEXT
Gut check: How to keep your digestive system healthy
04:40
High-functioning anxiety: What are the signs and symptoms?
03:38
What makes life worth living? Yale professor shares how to find joy
04:36
Walking 10,000 steps daily is a 'fabricated’ goal, doctor says
02:49
Gigi Robinson shares health update on endometriosis journey
04:22
Woman loses 40lbs with Start TODAY — see the results