Sleep and weight gain

AP Photo
AP Photo

Fox News- One of the tools in your arsenal to keep the weight off may just be a good night's sleep.  

Researchers analyzed self-reported data on height, weight and sleep duration in more than a thousand sets of twins.

They found those who slept more than seven hours a night had a lower body mass index (B-m-i) then those who slept less.

The team is not sure which genetic pathways involving weight are influenced by sleep.

They urge further research to determine the link.  Findings appear in the journal "Sleep."